*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	1	0	0	1
1973	0	0	0	0	0	0
1974	0	0	1	0	0	1
1975	0	0	0	0	0	0
1976	0	0	0	0	0	0
1977	0	0	0	0	0	0
1978	0	0	0	0	0	0
1979	0	0	0	0	0	0
1980	0	0	0	0	0	0
1981	0	0	0	0	0	0
1982	0	0	0	0	0	0
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	2	0	1	0	0	3
1988	3	1	0	0	0	4
1989	10	1	4	0	0	15
1990	10	0	0	0	0	10
1991	7	0	1	0	0	8
1992	6	0	0	0	0	6
1993	6	2	0	0	0	8
1994	25	0	1	0	0	26
1995	23	1	0	0	0	24
1996	19	0	7	0	0	26
1997	12	1	17	0	0	30
1998	5	4	1	0	0	10
1999	6	3	0	0	0	9
2000	1	2	0	0	0	3
2001	15	8	1	0	0	24
2002	11	12	1	0	0	24
2003	8	10	9	0	0	27
2004	16	0	2	0	0	18
2005	23	0	4	0	0	27
2006	23	1	2	0	0	26
2007	40	0	4	0	0	44
2008	23	1	3	0	0	27
2009	33	1	1	0	0	35
2010	26	0	0	0	0	26
2011	0	0	1	0	0	1
2012	0	2	1	0	0	3
2013	1	5	1	0	0	7
2014	0	2	3	0	0	5
2015	3	2	2	0	0	7
2016	1	0	4	0	0	5
2017	3	1	5	0	0	9
2018	1	1	3	0	0	5
2019	4	2	10	0	0	16
2020	2	1	6	0	0	9
2021	1	0	7	0	0	8
2022	2	0	1	0	0	3
2023	1	0	4	0	0	5
2024	0	1	3	0	0	4
Total	372	65	112	0	0	549