*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700020810
1970001001
1971000000
1972002013
1973001012
1974051006
1975021036
1976013059
19770360312
1978024028
19791090212
19801030610
19810150612
198211100618
1983004026
1984002046
19851360515
1986033039
198722130320
198826100624
198951180630
1990216120636
1991318210850
199209130628
199349340956
19944303901285
19957174101277
19961230320882
1997526550995
19982325909102
19991175601286
20004144601478
200139420963
2002248908103
2003768608107
20041136901194
2005118112013144
2006126129012159
20075777016105
20083512216137
200953201018227
201034285014306
201138325020356
201236242030281
20131417008183
201404450857
2015202501239
201600100515
2017131001327
2018003014
2019001001
2020000000
2021000000
Total119348254513893402