*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	1	3	8	0	1	13
1970	0	0	4	0	0	4
1971	0	0	2	0	0	2
1972	0	0	1	0	0	1
1973	0	0	1	0	0	1
1974	1	2	1	0	0	4
1975	0	2	3	0	0	5
1976	0	1	3	0	0	4
1977	0	1	8	0	2	11
1978	0	1	4	0	0	5
1979	1	0	10	0	0	11
1980	1	0	5	0	0	6
1981	0	0	5	0	0	5
1982	0	0	6	0	0	6
1983	0	1	8	0	0	9
1984	0	0	11	0	0	11
1985	1	1	4	0	0	6
1986	0	3	9	0	0	12
1987	0	6	16	0	0	22
1988	0	5	11	0	0	16
1989	1	10	17	0	0	28
1990	7	12	13	0	0	32
1991	15	16	26	0	0	57
1992	13	30	26	0	0	69
1993	21	113	30	0	0	164
1994	18	311	45	0	0	374
1995	10	236	38	0	3	287
1996	11	206	32	0	0	249
1997	3	141	38	0	2	184
1998	7	251	36	0	0	294
1999	3	96	30	0	0	129
2000	10	322	52	0	1	385
2001	5	135	42	0	0	182
2002	6	268	55	0	1	330
2003	9	231	45	0	0	285
2004	15	424	51	0	0	490
2005	8	135	72	0	0	215
2006	8	374	150	0	1	533
2007	10	220	106	0	0	336
2008	4	129	142	0	0	275
2009	6	157	187	0	0	350
2010	9	149	236	0	0	394
2011	6	146	228	0	0	380
2012	16	307	198	0	0	521
2013	29	448	396	0	0	873
2014	28	550	364	0	0	942
2015	40	653	565	0	1	1259
2016	32	722	654	0	3	1411
2017	60	817	759	0	0	1636
2018	51	765	804	0	2	1622
2019	34	785	662	0	0	1481
2020	52	899	995	0	1	1947
2021	39	693	679	0	0	1411
2022	38	651	534	0	0	1223
2023	1	1	16	0	0	18
Total	630	11429	8443	0	18	20520