*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197011406268
1970001034
1971000077
1972000033
1973000055
1974001067
1975000077
1976000066
197700001010
1978000066
1979000088
19800020810
198100001313
198200001111
1983000066
1984001045
1985002035
198600101112
19870050914
19880020911
1989022101235
1990011101123
19910060612
19921140915
199301561013170
199402878010305
199502436015264
199613524011368
199705277014548
1998225212010276
199902054011220
200002394015258
200101975011213
20020208906223
20030242908259
200403194010333
200502628012282
2006131524010350
2007026513113292
2008026250657
200913350847
2010086001280
2011024401460
201203067028125
201302286017125
2014246118131198
2015055167043265
2016479213166363
20179115241068433
20186149290055500
201910131312173527
20202164429058653
20215107279060451
20222133168041344
2023000011
2024000000
Total475154270349858893