*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000506570
1970000011
1971000033
1972000022
1973000066
1974000000
1975000099
1976001078
197700101314
1978000066
1979000022
198000101213
198100101920
198200201012
1983000044
198400101516
198500302326
198600201921
198700101617
1988000077
198900202325
199000411419
1991001622139
1992001301932
199300711826
19940051713
199500301417
19960021811
199700301316
199800100919
1999001302134
200000502126
2001001714058
2002002312044
2003001701633
200400902837
200500601420
200600402125
2007001912848
2008001001626
200900801725
201000111113
2011004603985
2012001170114231
201300114173188
2014002802250
2015001371105243
201600861142229
2017003420134476
2018002132187402
2019002201840
202000177047224
2021004660277743
2022003521295648
2023003003
2024001034
Total0023191620944429