*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197077012080
1970300205
197110000010
1972700007
1973700007
1974500207
1975700209
197613002015
197712005017
197812002014
197915006122
198012003015
198118002020
198221005026
198319003022
198421003024
198518002020
198621009131
1987200013033
1988200013134
1989180018844
19901959163988
19911508221358
19921805261059
199321043154110
1994260758170261
19952308194090
199619084681154
1997281240270341
1998211942200273
1999210331161216
2000280341227299
2001320433235304
2002200261218301
2003211253287364
2004190341377440
2005340177238350
20063206131239408
20073335149172362
20082261205210444
20091903241109372
20102103346119489
2011260049262580
2012490019888335
201370330930349
201401012419144
201530150761
201630046049
2017001203
2018000000
Total93618102302436867766