*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197088001089
1970400004
197110000010
1972600107
1973800008
1974500139
1975800008
197612000113
197712030015
197812001013
197916007023
198014001015
198116013121
198221003125
198316013020
198421003024
198517001321
198621015128
198722017535
198823008233
1989201014439
199025009438
1991211060688
1992180337462
1993310254592
1994291855396
1995250660495
1996190327352
1997350925069
1998300136976
1999261234568
2000340235677
2001341035777
2002230059082
2003251030460
2004250129459
2005330427569
2006291156390
2007270236368
20082781741111
200927001560183
201025161730205
2011310122561300
201293262230324
201324011659199
201410014015
20156008115
2016100708
2017000000
2018000000
Total1096187718391083138