*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001104556
1970001045
1971001034
1972000044
1973002079
19740090211
1975002057
19760040812
1977001078
1978000066
197900201113
1980000055
198100101314
19820020810
1983001089
198400401014
19850150814
198600801119
198700801018
1988021001022
1989031501028
199006711125
1991110140732
1992023160948
19931271601256
1994112139014175
1995110023212138
19961991307120
19970172201251
19980919013113
19990141601343
2000012029020169
200106737015119
2002111734112165
20030412401782
2004012829112170
20050164402282
20060263701780
2007010948017174
200801783216118
2009136202086
201001994120134
201101108024133
201200171142214
201301240136278
201401256042299
201502323180406
201602378092472
201701429083513
201813437297540
201926512082602
2020116780106786
2021036380124765
202212399084486
202301500051
202400380038
Total12120154401313858051