*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19704440012
1970000000
1971010001
1972000000
1973010001
1974000000
1975031015
1976000011
1977003014
1978010001
1979010001
1980011002
1981011002
1982013015
1983010012
1984000000
1985010001
1986042017
1987113005
1988025007
19890730010
199042010025
199121960027
199216180126
1993023190042
1994119160036
1995221300053
1996025130038
1997113300044
1998216380056
1999211150129
2000116410058
2001010350045
2002012480060
2003230370069
2004021380059
20052873301123
2006254280084
2007013390052
2008013490062
2009216600078
20104806700151
2011029570389
20120984704149
20134813800123
201441153800157
201571506302222
2016319311600312
201711685700226
201812619400356
201922709600368
2020222311500340
202112519200344
202222356100298
20230690015
2024000000
Total60263515700184283