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	10	7	10	10	7	9	14	8	12	14	10	21	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	25	9	13	15	20	20	7	18	192
2017	30	17	10	20	32	14	15	9	25	20	21	5	218
2018	19	21	8	19	16	19	39	8	16	21	15	15	216
2019	16	26	21	21	20	21	23	13	12	18	29	11	231

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					34			1				52
2015	22				1	19	2	3	3	3	3	27	83
2016						26	6	2	1	2	1	1	39
2017		33				24	6	2	3		1	2	71
2018	3	3	46	5	8	67	13	2	2	2	1	2	154
2019	60		1	3	1	86	3	1		1		55	211

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	-15	10	17	12	-13	5	22
2013	9	6	10	10	7	-24	14	7	10	14	9	21	93
2014	-7	12	12	15	11	-28	11	12	7	24	16	10	95
2015	-2	17	15	17	14	-5	13	6	32	14	19	-8	132
2016	15	13	23	14	25	-17	7	13	19	18	6	17	153
2017	30	-16	10	20	32	-10	9	7	22	20	20	3	147
2018	16	18	-38	14	8	-48	26	6	14	19	14	13	62
2019	-44	26	20	18	19	-65	20	12	12	17	29	-44	20

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	829	830	829	833	848	861	869
2011	841	841	841	845	846	845	853	844	848	854	869	876
2012	887	897	905	915	879	882	867	877	894	906	893	898
2013	907	913	923	933	940	916	930	937	947	961	970	991
2014	984	996	1008	1023	1034	1006	1017	1029	1036	1060	1076	1086
2015	1084	1101	1116	1133	1147	1142	1155	1161	1193	1207	1226	1218
2016	1233	1246	1269	1283	1308	1291	1298	1311	1330	1348	1354	1371
2017	1401	1385	1395	1415	1447	1437	1446	1453	1475	1495	1515	1518
2018	1534	1552	1514	1528	1536	1488	1514	1520	1534	1553	1567	1580
2019	1536	1562	1582	1600	1619	1554	1574	1586	1598	1615	1644	1600

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	103	98	83	111	101	159	137	59	1364

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	45	14	46	26	14	12	18	24		271

Today is day number 347 of 2019. The predicted total at year-end is 285 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	365	440
2010s	1170	1610

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	19	25%	94
2001	49	52%	143
2002	59	41%	202
2003	26	13%	228
2004	22	10%	250
2005	24	10%	274
2006	39	14%	313
2007	35	11%	348
2008	46	13%	394
2009	44	11%	438
2010	50	11%	488
2011	48	10%	536
2012	77	14%	613
2013	80	13%	693
2014	96	14%	789
2015	129	16%	918
2016	124	14%	1042
2017	155	15%	1197
2018	182	15%	1379
2019	221	16%	1600

Average year of entry = 2012.17

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	3
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	14
1961	58	24
1962	57	26
1963	56	18
1964	55	24
1965	54	30
1966	53	30
1967	52	35
1968	51	43
1969	50	38
1970	49	43
1971	48	41
1972	47	48
1973	46	54
1974	45	52
1975	44	44
1976	43	58
1977	42	58
1978	41	47
1979	40	51
1980	39	61
1981	38	61
1982	37	51
1983	36	53
1984	35	45
1985	34	50
1986	33	44
1987	32	46
1988	31	49
1989	30	41
1990	29	41
1991	28	41
1992	27	29
1993	26	35
1994	25	45
1995	24	23
1996	23	28
1997	22	33
1998	21	10
1999	20	14
2000	19	8
2001	18	12
2002	17	7
2003	16	8
2004	15	10
2005	14	5
2006	13	7
2007	12	5
2008	11	4
2009	10	6
2010	9	4
2011	8	6
2012	7	2
2013	6	2
2014	5	1

Average Birthyear = 1979.7
Current Year = 2019.95
Average Age = 40.24