*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	0	0	0	0	0	0
1970	0	0	0	0	0	0
1971	0	0	0	0	0	0
1972	0	0	0	0	0	0
1973	0	0	0	0	0	0
1974	0	0	0	0	0	0
1975	0	0	0	0	0	0
1976	0	0	0	0	0	0
1977	0	0	1	0	0	1
1978	0	0	0	0	0	0
1979	0	0	0	0	0	0
1980	0	0	0	0	0	0
1981	0	0	1	0	0	1
1982	0	0	0	0	0	0
1983	0	1	0	0	0	1
1984	0	0	0	0	0	0
1985	0	0	1	0	0	1
1986	0	0	0	0	0	0
1987	0	1	1	0	0	2
1988	0	0	0	0	0	0
1989	0	1	0	0	0	1
1990	0	2	0	0	0	2
1991	0	1	2	0	0	3
1992	0	0	1	0	0	1
1993	0	1	0	0	0	1
1994	0	2	0	0	0	2
1995	0	4	4	0	0	8
1996	0	3	4	0	0	7
1997	0	0	9	0	0	9
1998	0	1	4	0	0	5
1999	0	0	6	0	0	6
2000	0	2	3	0	0	5
2001	0	0	5	0	0	5
2002	0	4	14	0	0	18
2003	0	0	7	0	0	7
2004	0	0	6	0	0	6
2005	0	0	5	0	0	5
2006	0	0	3	0	0	3
2007	0	0	13	0	0	13
2008	0	5	13	0	0	18
2009	0	3	3	0	0	6
2010	0	13	18	0	0	31
2011	0	3	22	0	0	25
2012	1	19	13	0	0	33
2013	0	22	10	0	0	32
2014	0	27	24	0	0	51
2015	0	18	23	0	0	41
2016	0	53	34	0	0	87
2017	0	33	32	0	0	65
2018	0	22	27	0	0	49
2019	0	17	38	0	0	55
2020	0	9	53	0	0	62
2021	0	2	43	0	0	45
2022	0	5	39	0	0	44
2023	0	0	2	0	0	2
2024	0	0	0	0	0	0
Total	1	274	484	0	0	759