*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
2006283215401989
20070934117011052
20083877183001063
2009457421201791
20102659363001024
2011254936201914
201291213274001496
201341184196001384
2014161436145001597
201521345171001518
2016101474219031706
2017141746273032036
2018121714256001982
2019151820380002215
2020111913383012308
202162064382062458
202231927514012445
202306330039
2024000000
Total17631678538703937280