*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197076012079
1970200305
19719001010
1972700108
1973800109
1974500106
19758003011
19768003011
197710003013
19789002011
197912008020
198013006120
198112004016
198217006023
198314003017
198415005020
198515005020
1986190113134
1987150023341
1988190020241
1989160137256
1990181252147
19911106411573
1992191523211259
1993211918636685
199421063719662030
199522442419341988
199615123019952043
1997293013685730
199816112010761114
1999231112108145
200030113810121082
2001291238854924
200233236014411539
200324224010091077
200425154016961767
2005251238281347
2006292057758846
200730227513871496
20082413119648795
2009131212284222
20102010255371647
20114410298255598
20124810125449623
201330046580548
2014111255218476
201500137442
201610171827
201700013215
2018100001
Total884316424551922322657