*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970002002
1970000000
1971000000
1972000000
1973002024
1974000000
1975000000
1976002002
1977002002
1978001001
1979006006
1980003003
1981004004
1982007007
1983002013
1984002013
1985200002
19861090212
19871090010
1988116019
198921110418
199043140223
199122610065
199210190020
199323300136
199456330347
199546470259
199622410045
199713390548
199806240535
199912260837
200053190330
200161250234
200211380040
200317420454
200403330238
200502430348
200621420550
200720510356
200801680170
20094011700121
20105312100129
20114018901194
201210680069
201310410244
201402190122
201500110011
2016002002
2017006006
Total615913370641521