*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001110012
1970000000
1971002002
1972001001
1973104005
1974001001
1975052007
1976002002
197700100010
1978004004
1979107008
1980006006
1981007007
1982005005
1983004004
1984004004
1985006006
1986116008
198700110011
198821100013
198917130021
1990014320046
1991510210036
199206250031
1993016250041
1994117350053
199579420058
1996225240051
1997327510081
1998019500069
199929470058
2000289000100
20012913100142
20023313100137
20032312100126
20042118700100
200512111300135
2006199000100
200701210000112
20085712900141
20092714300152
201001414300157
201122118900212
201221225400268
20135523100241
20141823800247
20155533400344
20163429800305
20173437700384
20183945600468
20196349700506
20203257300578
20212359100596
20220150500506
2023008008
2024000000
Total813486297006726