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	14	11	112
2011	12	3		4	1	2	10	16	10	10	17	6	91
2012	12	11	11	10	16	8	13	10	16	12	12	6	137
2013	10	7	10	10	7	9	14	9	12	14	10	20	132
2014	10	12	12	15	10	6	11	12	8	24	16	10	146
2015	19	16	13	17	15	14	13	8	29	17	22	19	202
2016	15	12	23	14	24	9	12	14	19	19	7	17	185
2017	28	16	10	17	31	11	15	9	25	20	21	5	208
2018	18	20	8	19	16	19	39	8	16	21	15	15	214
2019	16	26	21	6									69

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						27	6	2	1	2	1	1	40
2017		33				24	6	1	3		1	2	70
2018	3	3	46	5	8	67	13	2	2	2	1	1	153
2019	62		1	2									65

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	12	8	76
2011	-28			4	1	-1	8	-9	4	6	15	6	6
2012	11	10	8	10	-36	3	-15	10	16	12	-13	5	21
2013	9	6	10	10	7	-24	14	8	10	14	9	20	93
2014	-7	12	12	15	10	-29	11	12	7	24	16	10	93
2015	-3	16	13	17	14	-6	11	5	26	14	19	-9	117
2016	15	12	23	14	24	-18	6	12	18	17	6	16	145
2017	28	-17	10	17	31	-13	9	8	22	20	20	3	138
2018	15	17	-38	14	8	-48	26	6	14	19	14	14	61
2019	-46	26	20	4									4

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	829	830	829	833	848	860	868
2011	840	840	840	844	845	844	852	843	847	853	868	874
2012	885	895	903	913	877	880	865	875	891	903	890	895
2013	904	910	920	930	937	913	927	935	945	959	968	988
2014	981	993	1005	1020	1030	1001	1012	1024	1031	1055	1071	1081
2015	1078	1094	1107	1124	1138	1132	1143	1148	1174	1188	1207	1198
2016	1213	1225	1248	1262	1286	1268	1274	1286	1304	1321	1327	1343
2017	1371	1354	1364	1381	1412	1399	1408	1416	1438	1458	1478	1481
2018	1496	1513	1475	1489	1497	1449	1475	1481	1495	1514	1528	1542
2019	1496	1522	1542	1546

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	61	1226
2019	117	109	162	84									472

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 June 2017 with 12 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	33									105

Today is day number 109 of 2019. The predicted total at year-end is 352 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	382	457
2010s	1095	1552

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	50	52%	146
2002	60	41%	206
2003	27	13%	233
2004	24	10%	257
2005	25	10%	282
2006	39	14%	321
2007	38	12%	359
2008	49	14%	408
2009	47	12%	455
2010	53	12%	508
2011	52	10%	560
2012	83	15%	643
2013	86	13%	729
2014	101	14%	830
2015	139	17%	969
2016	132	14%	1101
2017	172	16%	1273
2018	203	16%	1476
2019	68	5%	1544

Average year of entry = 2011.59

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	1
1941	78	1
1942	77	2
1943	76
1944	75	1
1945	74	2
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	18
1958	61	10
1959	60	17
1960	59	14
1961	58	25
1962	57	24
1963	56	20
1964	55	22
1965	54	28
1966	53	32
1967	52	38
1968	51	39
1969	50	42
1970	49	42
1971	48	41
1972	47	47
1973	46	56
1974	45	55
1975	44	42
1976	43	54
1977	42	55
1978	41	43
1979	40	52
1980	39	60
1981	38	59
1982	37	53
1983	36	44
1984	35	48
1985	34	49
1986	33	39
1987	32	50
1988	31	44
1989	30	39
1990	29	45
1991	28	38
1992	27	29
1993	26	33
1994	25	38
1995	24	22
1996	23	27
1997	22	28
1998	21	11
1999	20	8
2000	19	6
2001	18	7
2002	17	6
2003	16	6
2004	15	6
2005	14	5
2006	13	6
2007	12	4
2008	11	2
2009	10	6
2010	9	3
2011	8	3
2012	7
2013	6	1
2014	5	1

Average Birthyear = 1979.04
Current Year = 2019.3
Average Age = 40.26