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	19	7	4	9	16	15	11	113
2011	12	3		4	1	2	10	16	10	10	17	7	92
2012	13	11	11	10	16	8	13	10	17	12	12	6	139
2013	10	7	10	10	7	9	14	9	12	14	10	22	134
2014	10	12	12	15	11	6	11	12	8	24	16	10	147
2015	20	16	15	17	15	14	15	9	35	17	22	19	214
2016	15	13	23	14	25	9	13	15	20	20	7	18	192
2017	30	17	10	20	32	14	15	9	25	20	21	5	218
2018	18	21	8	19	16	19	39	8	16	21	15	15	215
2019	16	26	21	21	19	21	23	8					155

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	28				25	1	116
2013	1	1				33		1	2		1		39
2014	17					35			1				53
2015	22				1	20	2	3	3	3	3	28	85
2016						26	6	2	1	2	1	1	39
2017		33				24	6	1	3		1	2	70
2018	3	3	46	5	8	67	13	2	2	2	1	2	154
2019	62		1	3	1	83	3						153

Resulting Balance

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year Total
2010	3	4	6	11	8	5	1	-1	4	15	13	8	77
2011	-28			4	1	-1	8	-9	4	6	15	7	7
2012	12	10	8	10	-36	3	-15	10	17	12	-13	5	23
2013	9	6	10	10	7	-24	14	8	10	14	9	22	95
2014	-7	12	12	15	11	-29	11	12	7	24	16	10	94
2015	-2	16	15	17	14	-6	13	6	32	14	19	-9	129
2016	15	13	23	14	25	-17	7	13	19	18	6	17	153
2017	30	-16	10	20	32	-10	9	8	22	20	20	3	148
2018	15	18	-38	14	8	-48	26	6	14	19	14	13	61
2019	-46	26	20	18	18	-62	20	8					2

Number of Members at end of month

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2010	796	800	806	817	825	830	831	830	834	849	862	870
2011	842	842	842	846	847	846	854	845	849	855	870	877
2012	889	899	907	917	881	884	869	879	896	908	895	900
2013	909	915	925	935	942	918	932	940	950	964	973	995
2014	988	1000	1012	1027	1038	1009	1020	1032	1039	1063	1079	1089
2015	1087	1103	1118	1135	1149	1143	1156	1162	1194	1208	1227	1218
2016	1233	1246	1269	1283	1308	1291	1298	1311	1330	1348	1354	1371
2017	1401	1385	1395	1415	1447	1437	1446	1454	1476	1496	1516	1519
2018	1534	1552	1514	1528	1536	1488	1514	1520	1534	1553	1567	1580
2019	1534	1560	1580	1598	1616	1554	1574	1582

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	99	121	116	93	105	116	127	118	99	60	1225
2019	115	107	153	138	105	98	84	97					897

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 February 2019 with 10 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	58	21	16	12	16	33	13	33	57	68	398
2019	14	10	48	46	14	46	26	8					212

Today is day number 236 of 2019. The predicted total at year-end is 328 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	59	75
2000s	373	448
2010s	1144	1592

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	2	6%	34
1996	3	9%	37
1997	6	16%	43
1998	17	40%	60
1999	15	25%	75
2000	21	28%	96
2001	49	51%	145
2002	59	41%	204
2003	27	13%	231
2004	22	10%	253
2005	25	10%	278
2006	39	14%	317
2007	37	12%	354
2008	47	13%	401
2009	45	11%	446
2010	51	11%	497
2011	50	10%	547
2012	82	15%	629
2013	85	14%	714
2014	97	14%	811
2015	135	17%	946
2016	128	14%	1074
2017	165	15%	1239
2018	192	15%	1431
2019	150	10%	1581

Average year of entry = 2011.91

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

Birthyear	Age	Number of Members
1928	91	2
1929	90
1930	89	1
1931	88
1932	87
1933	86
1934	85	1
1935	84
1936	83
1937	82	1
1938	81	1
1939	80	1
1940	79	2
1941	78	1
1942	77	2
1943	76
1944	75	1
1945	74	3
1946	73
1947	72	2
1948	71	2
1949	70	2
1950	69	5
1951	68	4
1952	67	2
1953	66	4
1954	65	9
1955	64	13
1956	63	12
1957	62	17
1958	61	10
1959	60	15
1960	59	15
1961	58	24
1962	57	25
1963	56	19
1964	55	23
1965	54	29
1966	53	30
1967	52	38
1968	51	39
1969	50	39
1970	49	42
1971	48	40
1972	47	45
1973	46	54
1974	45	51
1975	44	43
1976	43	55
1977	42	57
1978	41	46
1979	40	51
1980	39	60
1981	38	61
1982	37	51
1983	36	52
1984	35	45
1985	34	48
1986	33	40
1987	32	47
1988	31	50
1989	30	40
1990	29	41
1991	28	41
1992	27	29
1993	26	36
1994	25	44
1995	24	22
1996	23	27
1997	22	32
1998	21	11
1999	20	10
2000	19	8
2001	18	10
2002	17	6
2003	16	6
2004	15	8
2005	14	5
2006	13	6
2007	12	5
2008	11	3
2009	10	6
2010	9	4
2011	8	5
2012	7	1
2013	6	1
2014	5	1

Average Birthyear = 1979.44
Current Year = 2019.64
Average Age = 40.2