*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970011002
1970000000
1971011002
1972000000
1973000000
1974000000
1975000000
1976001001
1977003003
1978001001
1979021003
1980011002
1981012003
1982001001
1983012003
1984001001
1985110002
1986021003
1987221005
1988043007
19890820010
199001210013
19911840013
199201040014
19930870015
1994127120040
1995038120050
199624670055
199711041300118
19980921200104
1999258120072
20002941600112
2001171160088
2002163250089
20030871900106
200401351700152
200511464000187
2006058260084
20071604300104
20080714200113
20090865500141
20100875200139
20110567200128
201201856600251
201301528400236
2014027810800386
2015329213500430
2016130121800520
2017237520500582
2018240722800637
2019149521700713
2020000000
2021010001
Total2539271790005742