CV-Helios Network: Menu Observers 1981-present
Yr/Mo	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1981								198108	198109	198110	198111	198112
1982	198201	198202	198203	198204	198205	198206	198207	198208	198209	198210	198211	198212
1983	198301	198302	198303	198304	198305	198306	198307	198308	198309	198310	198311	198312
1984	198401	198402	198403	198404	198405	198406	198407	198408	198409	198410	198411	198412
1985	198501	198502	198503	198504	198505	198506	198507	198508	198509	198510	198511	198512
1986	198601	198602	198603	198604	198605	198606	198607	198608	198609	198610	198611	198612
1987	198701	198702	198703	198704	198705	198706	198707	198708	198709	198710	198711	198712
1988	198801	198802	198803	198804	198805	198806	198807	198808	198809	198810	198811	198812
1989	198901	198902	198903	198904	198905	198906	198907	198908	198909	198910	198911	198912
1990	199001	199002	199003	199004	199005	199006	199007	199008	199009	199010	199011	199012
1991	199101	199102	199103	199104	199105	199106	199107	199108	199109	199110	199111	199112
1992	199201	199202	199203	199204	199205	199206	199207	199208	199209	199210	199211	199212
1993	199301	199302	199303	199304	199305	199306	199307	199308	199309	199310	199311	199312
1994	199401	199402	199403	199404	199405	199406	199407	199408	199409	199410	199411	199412
1995	199501	199502	199503	199504	199505	199506	199507	199508	199509	199510	199511	199512
1996	199601	199602	199603	199604	199605	199606	199607	199608	199609	199610	199611	199612
1997	199701	199702	199703	199704	199705	199706	199707	199708	199709	199710	199711	199712
1998	199801	199802	199803	199804	199805	199806	199807	199808	199809	199810	199811	199812
1999	199901	199902	199903	199904	199905	199906	199907	199908	199909	199910	199911	199912
2000	200001	200002	200003	200004	200005	200006	200007	200008	200009	200010	200011	200012
2001	200101	200102	200103	200104	200105	200106	200107	200108	200109	200110	200111	200112
2002	200201	200202	200203	200204	200205	200206	200207	200208	200209	200210	200211	200212
2003	200301	200302	200303	200304	200305	200306	200307	200308	200309	200310	200311	200312
2004	200401	200402	200403	200404	200405	200406	200407	200408	200409	200410	200411	200412
2005	200501	200502	200503	200504	200505	200506	200507	200508	200509	200510	200511	200512
2006	200601	200602	200603	200604	200605	200606	200607	200608	200609	200610	200611	200612
2007	200701	200702	200703	200704	200705	200706	200707	200708	200709	200710	200711	200712
2008	200801	200802	200803	200804	200805	200806	200807	200808	200809	200810	200811	200812
2009	200901	200902	200903	200904	200905	200906	200907	200908	200909	200910	200911	200912
2010	201001	201002	201003	201004	201005	201006	201007	201008	201009	201010	201011	201012
2011	201101	201102	201103	201104	201105	201106	201107	201108	201109	201110	201111	201112
2012	201201	201202	201203	201204	201205	201206	201207	201208	201209	201210	201211	201212
2013	201301	201302	201303	201304	201305	201306	201307	201308	201309	201310	201311	201312
2014	201401	201402	201403	201404	201405	201406	201407	201408	201409	201410	201411	201412
2015	201501	201502	201503	201504	201505	201506	201507	201508	201509	201510	201511	201512
2016	201601	201602	201603	201604	201605	201606	201607	201608	201609	201610	201611	201612
2017	201701	201702	201703	201704	201705	201706	201707	201708	201709	201710	201711	201712
2018	201801	201802	201803	201804	201805	201806	201807	201808	201809	201810	201811	201812
2019	201901	201902	201903	201904	201905	201906	201907	201908	201909	201910	201911	201912
2020	202001	202002	202003	202004	202005	202006	202007	202008	202009	202010	202011	202012
2021	202101	202102	202103	202104	202105	202106	202107	202108	202109	202110	202111	202112
2022	202201	202202	202203	202204	202205	202206	202207	202208	202209	202210	202211	202212
2023	202301	202302	202303	202304	202305	202306	202307	202308	202309	202310	202311	202312