Year and month

kar <hi@kar.gs>

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 0 0 0 2 1 0 0 0 0 3 0 0
2019 0 1 0 0 0 0 0 1 0 0 2 0
2020 1 1 0 0 1 0 0 1 0 2 1 0
2021 0 0 0 0 1 0 0 0 0 0 0 0