*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000003333
1970001012
1971001012
1972001012
1973000022
1974001034
1975000033
1976001045
1977002057
1978004059
1979005049
1980001056
19812470619
19820040711
1983001045
1984004048
19850070411
1986003047
19870070815
198801801019
1989013001445
1990086411386
1991014580779
1992035260667
199308237114134
1994119347016257
1995321745111277
199602103809257
199719232017142
19980792208109
1999123901153
2000014843018209
2001112640014181
200201147409197
200357451217149
200411405308202
20050303511581
20060353901589
2007017224015211
200827025011108
200902310437
20103445007104
20110197906104
2012023330965
2013039110151
2014122130137
20150180110
201605120017
2017022004
Total212004111963913541