*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000108182
1970000033
197100001010
1972000077
1973000055
1974001056
1975000088
197600101516
197700201315
197800701421
197900601420
198000401418
198100101718
198200501621
198300101617
198400001717
198500021214
198600402125
198700822535
198800902332
198900421824
199000861832
1991005032275
1992004602167
1993002804674
1994003623371
1995004423278
1996004902877
1997003743576
1998003204476
1999002102849
2000003204476
2001004025193
2002004913484
2003003903372
2004001603551
2005004203678
20060061042103
20070043569117
200800861749152
20090085268155
20100052151104
201100190177268
20120015129176356
2013008630109225
2014003701148
2015002502247
201600702431
2017001102
Total00144711215923151