*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	1	0	2	0	0	3
1970	0	0	0	0	0	0
1971	0	0	1	0	0	1
1972	0	0	0	0	0	0
1973	0	0	1	0	0	1
1974	0	0	1	0	0	1
1975	0	0	1	0	0	1
1976	0	0	0	0	0	0
1977	0	0	2	0	0	2
1978	0	0	6	0	0	6
1979	0	0	9	0	0	9
1980	0	0	2	0	0	2
1981	0	0	3	0	0	3
1982	0	0	3	0	0	3
1983	0	0	2	0	0	2
1984	0	0	3	0	0	3
1985	1	0	6	0	0	7
1986	0	0	6	0	0	6
1987	0	0	6	0	0	6
1988	0	0	9	0	0	9
1989	0	0	9	0	0	9
1990	1	3	7	0	0	11
1991	2	4	6	0	0	12
1992	0	4	10	0	0	14
1993	0	2	11	0	0	13
1994	1	10	17	0	0	28
1995	4	4	24	0	0	32
1996	2	1	11	0	0	14
1997	1	4	6	0	0	11
1998	1	5	8	0	0	14
1999	0	1	10	0	0	11
2000	1	1	25	0	0	27
2001	1	1	20	0	0	22
2002	0	0	40	0	0	40
2003	1	11	38	0	0	50
2004	0	2	31	0	0	33
2005	1	5	11	0	0	17
2006	0	1	50	0	0	51
2007	0	4	34	0	0	38
2008	0	0	33	0	0	33
2009	2	6	44	0	0	52
2010	1	9	40	0	0	50
2011	0	7	40	0	0	47
2012	2	22	59	0	0	83
2013	3	6	111	0	0	120
2014	0	6	110	0	0	116
2015	4	14	159	0	0	177
2016	0	4	161	0	0	165
2017	3	2	185	0	0	190
2018	0	2	175	0	0	177
2019	1	7	217	0	0	225
2020	1	6	208	0	0	215
2021	5	3	247	0	0	255
2022	0	0	236	0	0	236
2023	0	0	3	0	0	3
2024	0	0	0	0	0	0
Total	40	157	2459	0	0	2656