*Excludes Observations that spanned multiple years

	B	b	t	W	w
Pre 1970	0	0	1	0	0	1
1970	0	0	0	0	0	0
1971	0	0	0	0	0	0
1972	0	0	0	0	0	0
1973	0	0	0	0	0	0
1974	0	0	0	0	0	0
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	1	0	0	1
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	0	0	0	0	0	0
1988	0	0	0	0	0	0
1989	0	0	0	0	0	0
1990	0	0	0	0	0	0
1991	0	0	0	0	0	0
1992	0	0	0	0	0	0
1993	0	0	0	0	0	0
1994	0	0	0	0	0	0
1995	0	0	0	0	0	0
1996	0	0	0	0	0	0
1997	0	0	1	0	0	1
1998	0	0	0	0	0	0
1999	0	0	0	0	0	0
2000	0	0	0	0	0	0
2001	0	0	0	0	0	0
2002	0	0	0	0	0	0
2003	0	0	0	0	0	0
2004	0	0	0	0	0	0
2005	0	0	0	0	0	0
2006	0	0	0	0	0	0
2007	0	0	0	0	0	0
2008	0	0	0	0	0	0
2009	0	0	2	0	0	2
2010	0	0	0	0	0	0
2011	0	0	0	0	0	0
2012	0	0	1	0	0	1
2013	0	0	2	0	0	2
2014	0	0	0	0	0	0
2015	0	0	0	0	0	0
2016	0	0	2	0	0	2
2017	0	0	0	0	0	0
2018	0	0	0	0	0	0
2019	0	0	4	0	0	4
2020	0	0	7	0	0	7
2021	0	0	0	0	0	0
2022	0	0	1	0	0	1
2023	0	0	0	0	0	0
2024	0	0	0	0	0	0
Total	0	0	22	0	0	22