*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197007150123
1970000011
197101010011
1972001001
1973000022
1974010001
19750550111
1976032005
1977017019
1978013015
19790560011
19800380011
1981014016
1982014016
1983025018
1984044008
1985033006
19861540111
198702210023
198805220027
1989112320146
1990757120076
1991424160044
1992540130058
199332341300250
199436514902705
199525882501616
199633882901421
199716505500706
199845913202629
199933822600411
200036883902732
200148193300856
200208678400951
20036132647001379
20045146354011523
200565729600674
2006283215301988
20070934117011052
20083877183001063
2009457421201791
20102659363001024
2011254936201914
2012111211274001496
201351183196001384
2014161436145001597
201531344171001518
2016121472217031704
2017141746273032036
2018151709256001980
2019181817380002215
2020111913383012308
202162064382062458
202231927507012438
2023063009
Total18831664534703937238