*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001101223
1970000011
1971003025
1972000011
1973004026
1974002013
19750340411
1976001056
197712120419
19780430310
197922130522
1980007029
198100150722
198200110516
198321110418
1984004059
1985005049
198605190630
1987132111137
198803230733
198907210937
19901112601048
1991415530577
1992332001036
1993613510575
19944258509123
1995825401175
19961318580897
1997112291015139
199861578113113
1999345501476
200029660885
2001595811083
20022310205112
200392394011137
20043169709125
200533613809186
20061141179013244
200732178015198
20082124506254
200972410122442
2010168366015405
201151524031561
201213910871541164
2013161131201011430
2014126144501081571
2015439199511222170
2016340241121502597
2017621251301282704
201871729821993160
2019773280111162998
2020102127599
2021001001
2022101002
Total4633451978712130721914