*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000109394
1970001045
197100001010
1972000044
1973000077
1974001056
1975001089
197600101213
197700401317
197800001313
197900101516
198000101617
198100201921
198200102425
198300201719
198400102324
198500202123
198600502126
198700812332
198800402630
198900502126
199000302124
1991004002161
1992002302447
1993002313458
1994002123255
1995002913767
1996002802654
1997001923556
1998003703875
1999003602561
2000003304073
2001001503045
2002001901938
2003001601935
200400602228
2005002802856
2006002713361
2007001634160
2008002673568
2009002304669
2010003204375
20110060142103
20120073080153
20130094063157
201400127087214
2015001500145295
2016001830155338
2017001690176345
2018002240149373
2019002582143403
2020004090170579
2021003290219548
2022001410173314
202300150419
202400100010
Total0027832126505454