*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970135009
1970002002
1971002002
1972000000
1973011002
1974013004
1975013004
1976023005
1977004004
1978023005
1979035008
1980014005
1981012003
19820380011
1983024006
1984116008
19850480012
198605110016
198706100016
19880770014
1989011120023
1990124130038
1991222260050
199238150026
1993323290055
19943704700120
1995361300094
1996654240084
1997751250083
1998273200095
1999039200059
20005803900124
2001158290088
20020714300114
200311293200162
200421643100197
20051734800122
20061946100156
20070948400178
20081977300171
20093319800132
201065817600240
201106513500200
2012520312100329
20131524516700427
2014830317600487
2015937117200552
2016641322900648
20171052928800827
20181360331200928
201914643349001006
202011727464001202
202110796455001261
20228741332001081
202300330033
2024000000
Total162706742990011528