*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000000
1970000011
1971000011
1972001023
1973002024
1974001012
1975001034
1976000033
1977003025
1978003025
1979002024
19800290213
1981002057
1982002046
1983004026
19840080412
19856080317
198601200425
198722140523
19881104301165
1989925801079
1990273283970
199193280545
1992103210539
1993421111129
1994111200941
199573211941
199605280841
1997121501129
199816120827
1999121601130
2000301201631
2001122301339
2002103101042
2003573801565
2004003301447
2005203201852
20061066401898
200741288016120
20085790019121
20091011101010132
20107147607104
201144792998
2012135231271
201301970029118
2014313290045
201515211331
2016007018
2017012003
Total1461511229113651902