*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700030912
1970000011
1971000000
1972000000
1973000000
1974002002
1975001012
1976000011
1977003014
1978000000
1979002013
1980001023
1981000011
1982101013
1983202015
198460270033
19853160717
1986003014
1987003014
1988103026
1989002035
19903280215
199112130117
199210170220
199360220331
1994922401752
1995522801853
1996802402052
1997911901342
19981103601865
1999813102262
2000407601090
2001603002258
20021513402676
20031003903281
200491290948
2005503002762
2006304002568
2007304801768
200800620971
2009007101788
20102192015110
201141103015123
201243136031174
201347184128224
201462147032187
2015143206045268
2016121243048304
2017126404181504
201895540090644
2019218467171568
2020221552295672
2021272495097621
2022232425182533
2023804101261
202400110213
Total297554786610876231