Mensa Switzerland The High IQ Society

The following tables display how many members have joined or quit Mensa in each month.

Entries by month

Year of Entry	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010	3	4	6	11	8	18	7	4	9	16	15	11	112
2011	12	3		4	1	2	10	16	10	10	17	7	92
2012	12	11	11	10	16	8	13	10	17	12	12	6	138
2013	11	7	10	10	7	9	14	8	12	14	10	20	132
2014	10	12	12	15	11	6	11	12	8	24	16	10	147
2015	20	17	15	17	15	14	15	9	35	17	22	19	215
2016	15	13	23	14	26	9	13	15	20	20	7	18	193
2017	30	17	10	20	32	14	16	9	29	19	24	5	225
2018	19	23	8	19	17	21	41	8	17	21	17	18	229
2019	16	26	21	21	21	21	23	14	12	18	29	26	248
2020	16	13	35	6	8	23	13	11	15				140

Exits by month

Year of Exit	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010						14	6	5	5	1	2	3	36
2011	40	3				3	2	25	6	4	2		85
2012	1	1	3		52	5	27				24	1	114
2013	1	1				31		1	2				36
2014	17					34			1				52
2015	21				1	19	2	3	3	3	3	25	80
2016						26	5	2	1	2	1	1	38
2017		33				24	6	1	2		1	2	69
2018	3	3	45	4	8	67	9	1	2	2	1	2	147
2019	58		1	3	1	84	3	1		1		52	204
2020			2			72			2				76

Resulting Balance

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010	3	4	6	11	8	4	1	-1	4	15	13	8	76
2011	-28			4	1	-1	8	-9	4	6	15	7	7
2012	11	10	8	10	-36	3	-14	10	17	12	-12	5	24
2013	10	6	10	10	7	-22	14	7	10	14	10	20	96
2014	-7	12	12	15	11	-28	11	12	7	24	16	10	95
2015	-1	17	15	17	14	-5	13	6	32	14	19	-6	135
2016	15	13	23	14	26	-17	8	13	19	18	6	17	155
2017	30	-16	10	20	32	-10	10	8	27	19	23	3	156
2018	16	20	-37	15	9	-46	32	7	15	19	16	16	82
2019	-42	26	20	18	20	-63	20	13	12	17	29	-26	44
2020	16	13	33	6	8	-49	13	11	13				64

Number of Members at end of month

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	795	799	805	816	824	828	829	828	832	847	860	868
2011	840	840	840	844	845	844	852	843	847	853	868	875
2012	886	896	904	914	878	881	867	877	894	906	894	899
2013	909	915	925	935	942	920	934	941	951	965	975	995
2014	988	1000	1012	1027	1038	1010	1021	1033	1040	1064	1080	1090
2015	1089	1106	1121	1138	1152	1147	1160	1166	1198	1212	1231	1225
2016	1240	1253	1276	1290	1316	1299	1307	1320	1339	1357	1363	1380
2017	1410	1394	1404	1424	1456	1446	1456	1464	1491	1510	1533	1536
2018	1552	1572	1535	1550	1559	1513	1545	1552	1567	1586	1602	1618
2019	1576	1602	1622	1640	1660	1597	1617	1630	1642	1659	1688	1662
2020	1678	1691	1724	1730	1738	1689	1702	1713	1726

The following table shows the event activity by month by counting the signups for all Mensa events in each month.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010								18	39	96	45	55	253
2011	80	74	26	16	78	65	42	64	82	145	100	107	879
2012	55	57	62	61	94	88	69	179	75	76	95	83	994
2013	123	54	65	73	46	38	66	114	69	62	77	31	818
2014	110	54	50	39	59	24	89	151	72	61	59	62	830
2015	79	46	72	39	55	63	58	83	155	79	58	83	870
2016	108	107	76	104	73	76	86	179	143	66	101	94	1213
2017	94	142	128	86	117	129	135	75	66	74	65	86	1197
2018	117	54	97	120	116	93	105	116	127	118	99	60	1222
2019	115	107	153	138	103	98	83	110	101	155	134	102	1399
2020	331	178	56	5	28	60	96	120	69				943

The following table displays the number of forum posts by month. As you can guess from the numbers, the website was launched in August 2010. Forum activity reached an all-time high in January 2011 with 2'217 posts. The most active single day was March 23rd 2011 with 167 posts. In general, forum activity has been declining in the last years, reaching an all-time low in March 2020 with 3 posts.

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010	2	4	1	7		2		255	613	450	344	613	2291
2011	2217	1176	1095	555	645	534	222	250	479	1268	955	805	10201
2012	605	385	651	839	825	443	404	579	783	924	777	309	7524
2013	370	541	653	425	572	368	174	305	177	399	217	173	4374
2014	340	342	250	338	390	241	278	250	335	250	358	231	3603
2015	370	169	298	211	165	174	167	163	244	107	390	48	2506
2016	161	170	149	108	64	67	71	54	50	20	148	77	1139
2017	101	59	64	46	43	12	88	32	118	58	65	31	717
2018	45	26	57	20	16	12	16	33	13	33	57	68	396
2019	14	10	48	45	14	46	26	14	12	18	24	6	277
2020	39	12	3	8	5	7	3	6	6				89

Today is day number 263 of 2020. The predicted total at year-end is 124 posts.

The following table displays the distribution of our members by decade of entry into Mensa Switzerland.

Decade of Entry	Number of Members who joined in that decade	Cumulative
1960s	3	3
1970s	5	8
1980s	8	16
1990s	56	72
2000s	363	435
2010s	1168	1603
2020s	138	1741

As the table shows, although Mensa Switzerland was founded as early as 1965, the majority of our members joined just recently in the 2010s, and more than 90% joined after the turn of the millennium.

The following table displays the distribution of our members by year of entry into Mensa. Please note that the actual number of members that Mensa Switzerland had in these years is higher, because in this table only members who are still members today are counted. Nevertheless, the numbers can give you some indication of the speed at which Mensa Switzerland was growing at various times. In percentage terms, Mensa Switzerland underwent a particularly rapid expansion in the five years from 1998 to 2002.

Year of Entry	Number of Members who joined in that year	Growth in %	Cumulative
1965	2		2
1966	1	50%	3
1970	1	33%	4
1972	1	25%	5
1975	2	40%	7
1977	1	14%	8
1981	4	50%	12
1982	1	8%	13
1983	2	15%	15
1986	1	7%	16
1990	3	19%	19
1991	4	21%	23
1992	1	4%	24
1993	7	29%	31
1994	1	3%	32
1995	1	3%	33
1996	3	9%	36
1997	6	17%	42
1998	15	36%	57
1999	15	26%	72
2000	19	26%	91
2001	50	55%	141
2002	60	43%	201
2003	27	13%	228
2004	22	10%	250
2005	23	9%	273
2006	38	14%	311
2007	35	11%	346
2008	45	13%	391
2009	42	11%	433
2010	51	12%	484
2011	48	10%	532
2012	77	14%	609
2013	82	13%	691
2014	94	14%	785
2015	131	17%	916
2016	118	13%	1034
2017	147	14%	1181
2018	180	15%	1361
2019	226	17%	1587
2020	138	9%	1725

Average year of entry = 2012.79

The following table displays the age distribution of our members by birthyear.

Birthyear	Age	Number of Members
1928	92	2
1929	91
1930	90
1931	89
1932	88
1933	87
1934	86	1
1935	85
1936	84
1937	83	1
1938	82	1
1939	81	1
1940	80	2
1941	79	1
1942	78	2
1943	77
1944	76
1945	75	3
1946	74
1947	73	2
1948	72	2
1949	71	2
1950	70	3
1951	69	4
1952	68	3
1953	67	4
1954	66	10
1955	65	13
1956	64	12
1957	63	18
1958	62	11
1959	61	15
1960	60	15
1961	59	24
1962	58	29
1963	57	19
1964	56	23
1965	55	32
1966	54	28
1967	53	37
1968	52	43
1969	51	38
1970	50	42
1971	49	45
1972	48	47
1973	47	55
1974	46	60
1975	45	44
1976	44	59
1977	43	62
1978	42	49
1979	41	58
1980	40	66
1981	39	62
1982	38	57
1983	37	56
1984	36	51
1985	35	52
1986	34	46
1987	33	50
1988	32	52
1989	31	44
1990	30	45
1991	29	41
1992	28	29
1993	27	37
1994	26	54
1995	25	21
1996	24	34
1997	23	35
1998	22	16
1999	21	16
2000	20	11
2001	19	15
2002	18	9
2003	17	11
2004	16	10
2005	15	6
2006	14	8
2007	13	8
2008	12	4
2009	11	7
2010	10	6
2011	9	7
2012	8	3
2013	7	2
2014	6	1

Average Birthyear = 1980.22
Current Year = 2020.72
Average Age = 40.49