*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	1	0	0	0	0	1
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	1	0	0	1
1975	0	0	1	0	0	1
1976	0	0	0	0	0	0
1977	0	0	0	0	0	0
1978	0	0	0	0	1	1
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	1	1
1983	0	0	0	0	0	0
1984	0	0	0	0	0	0
1985	0	0	0	0	0	0
1986	0	0	0	0	0	0
1987	0	1	0	0	0	1
1988	0	0	2	0	2	4
1989	0	0	0	0	0	0
1990	0	0	0	0	0	0
1991	0	1	2	0	0	3
1992	0	0	1	0	1	2
1993	0	0	0	0	1	1
1994	2	0	1	0	0	3
1995	0	0	1	0	0	1
1996	0	0	0	0	1	1
1997	0	3	0	0	1	4
1998	0	0	8	0	1	9
1999	0	0	1	0	1	2
2000	0	0	0	0	2	2
2001	0	0	1	0	1	2
2002	1	0	2	0	3	6
2003	2	1	6	0	1	10
2004	0	3	4	0	1	8
2005	0	5	1	0	2	8
2006	0	0	1	0	2	3
2007	0	0	6	0	1	7
2008	1	0	4	0	1	6
2009	1	1	6	0	0	8
2010	1	0	3	0	3	7
2011	0	0	4	0	0	4
2012	1	6	6	0	1	14
2013	2	23	18	0	4	47
2014	1	29	8	0	1	39
2015	1	21	20	0	4	46
2016	1	1	25	0	9	36
2017	4	0	19	0	2	25
2018	1	2	20	0	0	23
2019	2	3	13	0	4	22
2020	1	0	16	0	2	19
2021	0	0	21	0	3	24
2022	1	1	10	0	1	13
2023	1	0	4	1	3	9
2024	0	0	7	0	1	8
Total	25	101	244	1	62	433