Year and month

Dieter Adriaenssens <ruleant@users.sourceforge.net>

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2013 0 0 0 0 0 0 0 0 0 0 0 7
2014 0 0 0 2 0 0 2 0 0 1 0 0
2015 1 0 0 0 0 0 0 0 0 0 0 0
2022 1 0 0 0 0 0 0 0 0 0 0 0