*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197030207479
1970002035
1971000077
1972000044
1973002046
1974002057
1975003058
197600401014
19770090615
1978004048
1979011101224
198010120922
198100701118
19820070815
19830040711
19840060713
1985014038
1986211001023
1987131521637
1988021501734
1989091801340
1990136280772
1991421330260
199216290642
19937294001389
199437294016185
199511615007129
199612605508135
19971088213010321
1998790170012279
199944017609229
2000443230014291
2001720259015301
200212330905338
2003103339709449
2004610041609531
2005694369012481
20061643415014488
2007255343018418
20081010927618404
2009612035801485
2010615239601555
2011311643309561
20121180254020455
201327024503320
201402514100166
20151366900106
2016010380048
2017020002
Total1481751597334638338