*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970131005
1970000000
1971000000
1972001001
1973001001
1974000000
1975011002
1976014005
1977000000
1978010001
1979001001
1980013004
1981002002
1982018009
1983013004
1984012003
1985011002
19860470011
198702110013
1988045009
19890890017
199011770025
199101390022
199225140021
1993323130039
1994243270072
1995516160037
199632580036
1997451160071
1998157120070
1999029160045
2000045180063
2001457160077
2002070170087
200301083100139
200401153500150
20051992800128
200601186300181
20070966600162
20080807400154
2009035500085
201027610600184
201103615100187
2012321415200369
2013324215000395
2014138824100630
2015451627500795
20166634437001077
20178744371001123
20181896473001370
20198946553001507
2020003003
2021020002
Total6358253508009396