*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197032402433
1970000011
1971001045
1972000033
1973001045
1974114039
19750040711
19760210710
1977032038
1978010067
1979011057
1980000077
19810010910
198200501015
1983000088
198400201214
198500101213
198601301115
19870170816
198801601219
198901401015
1990121001124
199112260736
1992122801142
1993116001880
1994032901446
1995125301369
1996212801041
1997102601441
1998232901751
1999101811636
2000112901950
2001002701744
2002103201346
2003221801234
2004121401431
2005022301641
2006022101639
2007012401742
2008104801160
2009205702382
2010407001791
201110144023168
201232192046243
201322216134255
201413150040194
201551186157250
201633233057296
201765264069344
201865290059360
201969303047365
2020110340063414
2021195338144407
202295346169430
202302240127
2024001034
Total99823744510845014