*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	1	3	9	0	0	13
1970	0	0	1	0	0	1
1971	0	1	0	0	0	1
1972	0	0	0	0	0	0
1973	0	0	1	0	0	1
1974	0	2	3	0	0	5
1975	0	1	1	0	0	2
1976	0	2	3	0	0	5
1977	0	0	2	0	0	2
1978	0	1	1	0	0	2
1979	0	1	1	0	0	2
1980	0	0	1	0	0	1
1981	0	0	1	0	0	1
1982	0	1	2	0	0	3
1983	0	2	1	0	0	3
1984	0	0	1	0	0	1
1985	0	2	4	0	0	6
1986	0	0	2	0	0	2
1987	0	2	5	0	0	7
1988	0	3	9	0	0	12
1989	0	5	6	0	0	11
1990	2	6	8	0	0	16
1991	4	7	11	0	0	22
1992	6	2	22	0	0	30
1993	1	6	30	0	0	37
1994	0	19	51	0	0	70
1995	3	10	57	0	0	70
1996	2	9	71	0	0	82
1997	0	14	18	0	0	32
1998	0	12	33	0	0	45
1999	0	4	14	0	0	18
2000	0	6	62	0	0	68
2001	1	8	28	0	0	37
2002	1	13	40	0	0	54
2003	0	11	40	0	0	51
2004	0	21	143	0	0	164
2005	0	14	45	0	0	59
2006	6	18	52	0	0	76
2007	0	29	48	0	0	77
2008	0	20	41	0	0	61
2009	0	10	35	0	0	45
2010	1	37	100	0	0	138
2011	0	21	47	0	0	68
2012	0	72	53	0	0	125
2013	1	85	75	0	0	161
2014	4	92	81	0	0	177
2015	1	111	103	0	0	215
2016	2	127	116	0	0	245
2017	1	178	160	0	0	339
2018	1	179	189	0	0	369
2019	6	246	213	0	0	465
2020	2	305	302	0	0	609
2021	3	271	346	0	0	620
2022	4	298	187	0	0	489
2023	0	0	8	0	0	8
2024	0	1	16	0	0	17
Total	53	2288	2899	0	0	5240