*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000808896
1970000044
197100001010
1972001067
1973000088
19740330511
1975000088
197601101214
197730301218
197800101314
197900801624
198000201416
198111701726
198201502228
198310501622
198400402125
198503201823
198611702130
1987151102340
198802802434
1989041412039
1990041202541
1991066112189
1992343901965
1993256003198
19948374129115
19956474027111
1996333501960
1997903903684
1998194703289
1999254612680
2000263803682
2001174513690
2002006802391
2003045012580
2004144002671
2005454803693
20061375131111
2007234602980
200811106830146
200900175053228
201070192151251
2011121279065357
2012923722148533
20138114571129606
2014453581147515
20151233881210614
20161204764269761
201716975742641050
2018131086322621150
2019151276732841081
20207395743311302
20218478533181118
202215573822741034
202300130417
20240020911
Total191162867243373312801