Spocanistics
------------

volume   month   year
------   -----   ----
  1      Nov     1973
  2      Mar     1974
  3      Jun
  4      Oct         
  5      Jan     1975
  6      Jun         
  7      Jan     1976
  8      Jun         
  9      Feb     1977
 10      Jul         
 11      Feb     1978
 12      Jul         
 13      Mar     1979
 14      Jul         
 15      Mar     1980
 16      Aug         
 17      Feb     1981
 18      Jul         
 19      Feb     1982
 20      Aug         
 21      Jan     1983
 22      Apr
 23      Sep
 24      Feb     1984
 25      Jul
 26      Mar     1985
 27      Jul
 28      Feb     1986
 29      Jun
 30      Mar     1987
 31      Aug
 32      Feb     1988
 33      Jul
 34      Feb     1989
 35      Jul
 36      Feb     1990
 37      Aug
 38      Feb     1991
 39      Jul
 40      Mar     1992
 41      Jul
 42      Feb     1993
 43      Jul
 44      Feb     1994
 45      Jul
 46      Mar     1995
 47      Aug
 48      Mar     1996
 49      Jul
 50      Feb     1997
 51      Jun
 52      Oct
 53      Feb     1998
 54      Jul
 55      Feb     1999
 56      Jul
 57      Feb     2000
 58      Jun
 59      Jan     2001
 60      Jul
 61      Feb     2002
 62      Aug
 63      Feb     2003
 64      Jun
 65      Feb     2004
 66      May
 67      Sep
 68      Feb     2005
 69      Jun
 70      Jan     2006
 71      May
 72      Sep
 73      Feb     2007
 74      Oct
 75      Mar     2008
 76      Aug
 77      Dec
 78      Feb     2009
 79      Jun
 80      Mar     2010
 81      Jul
 82      Jan     2011
 83      May
 84      Oct
 85      Feb     2012
 86      Jun
 87      Mar     2013
 88      Sep
 89      Feb     2014  laatste papieren nummer
 90      Apr           eerste digitale nummer
 91      Aug
 92      Oct
 93--96   2015 vanaf nu 4 nummers per jaar
 97--100  2016
101--105  2017 (5 nrs!)
106--109  2018
110--113  2019
114--117
118--121