*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197004902336
1970007029
19710310610
1972002035
1973012036
19740250310
197501140116
19760340613
19770280414
1978012047
19790360514
19800290314
19810170412
19820380617
19830270514
19840290819
1985012069
198615170528
198701150420
19880760720
198929180534
1990460190487
1991326270258
1992319180444
19933613404102
199411686604239
199581192604157
19969833605133
199784634707525
199863253606373
199932693705314
200013614208412
200163435405408
200213168705409
2003142512004550
200474587809552
2005039312906528
2006536812806507
2007033312905467
2008021720305425
2009318420506398
2010620528205498
2011116934308521
20125551234012802
2013553527706823
20142606257014879
201537153890291136
201628253610231211
2017710765060191608
201869595080261499
2019611555870191767
2020612577780132054
2021113936970212112
2022313965610151975
202304430047
202400440044
Total128159007536042723991