*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	3	2	1	0	0	6
1970	0	0	0	0	0	0
1971	0	1	0	0	0	1
1972	0	0	1	0	0	1
1973	0	0	0	0	0	0
1974	0	0	0	0	0	0
1975	0	3	0	0	0	3
1976	0	0	0	0	0	0
1977	0	0	5	0	0	5
1978	1	0	4	0	0	5
1979	0	1	1	0	0	2
1980	0	0	1	0	0	1
1981	0	1	2	0	0	3
1982	0	2	2	0	0	4
1983	0	1	4	0	0	5
1984	0	0	0	0	0	0
1985	0	0	1	0	0	1
1986	2	3	3	0	0	8
1987	1	5	6	0	0	12
1988	1	4	3	0	0	8
1989	0	7	4	0	0	11
1990	4	9	5	0	0	18
1991	1	10	6	0	0	17
1992	3	1	12	0	0	16
1993	2	26	14	0	0	42
1994	5	27	21	0	0	53
1995	4	8	10	0	0	22
1996	3	23	14	0	0	40
1997	3	34	12	0	0	49
1998	3	48	14	0	0	65
1999	0	32	10	0	0	42
2000	5	51	16	0	0	72
2001	2	42	9	0	0	53
2002	0	34	19	0	0	53
2003	2	64	28	0	0	94
2004	2	43	12	0	0	57
2005	4	81	23	0	0	108
2006	2	25	29	0	0	56
2007	0	37	30	0	0	67
2008	0	30	41	0	0	71
2009	0	61	47	0	0	108
2010	7	89	100	0	0	196
2011	2	29	78	0	0	109
2012	5	159	102	0	0	266
2013	6	144	87	0	0	237
2014	7	143	65	0	0	215
2015	8	182	97	0	0	287
2016	8	209	103	0	0	320
2017	8	266	115	0	0	389
2018	10	280	171	0	0	461
2019	14	317	150	0	0	481
2020	9	298	200	0	0	507
2021	5	418	197	0	0	620
2022	5	417	113	0	0	535
2023	0	0	3	0	0	3
2024	0	0	0	0	0	0
Total	147	3667	1991	0	0	5805