Year and month

Andre Staltz <andre@staltz.com>

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 0 0 0 0 0 0 0 0 1 0 0 0
2019 0 0 0 1 0 0 0 0 2 1 0 0
2020 1 0 0 0 1 1 1 0 1 1 0 0
2021 0 0 0 0 0 0 0 0 0 1 0 0
2022 1 0 0 0 0 0 0 0 0 0 0 0
2023 0 1 0 0 0 0 0 0 0 0 0 0