*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970011308599
1970000033
197100001010
1972001056
1973001056
19740240410
19750130711
19760250815
197701501117
19780030811
197902501017
198001301216
198100501621
198202801727
198302401117
198401401722
198511201317
1986021601735
1987031901840
19880111002142
1989081001533
19901191611653
19913154211475
19921103001253
19930164501778
199402659128114
19952183702178
19961103601259
19971175402597
19981265112099
19990104002575
2000114101033149
200111590030136
200211584016116
2003135106022164
200403680024140
200522497136160
2006120131126179
2007126128327185
2008134120420179
2009216126032176
2010019184032235
2011016189039244
2012389243084419
20134184361170620
20142167292185547
201512594331103797
2016332363321481109
201722985661127994
2018328255921581004
201912744833147908
2020226172801111102
2021127671521411135
202233473202122794
202305240534
202401250127
Total473243734928214212809