100 instances from 5 years 2023 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 24 Oct Nov Dec 2022 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 29 Dec 2021 - 49 instances Jan 31 24 17 16 10 2 1 Feb 27 22 13 6 1 Mar 27 20 13 6 1 Apr 24 17 10 3 1 May 29 22 16 8 1 Jun 26 19 13 5 1 Jul 31 24 10 3 1 Aug 28 21 14 7 1 Sep 25 18 11 4 1 Oct 20 Nov Dec 1 2020 - 47 instances Jan 21 Feb Mar 31 Apr May 31 23 16 1 Jun 27 21 17 13 7 1 Jul 26 20 19 11 5 1 Aug 29 23 15 8 2 1 Sep 26 20 15 14 13 5 1 Oct 31 25 19 18 11 4 1 Nov 23 15 9 1 Dec 26 20 13 7 1 2019 - 2 instances Jan 15 Feb Mar Apr May Jun Jul 8 Aug Sep Oct Nov Dec