*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700840012
1970011002
1971051006
1972000000
1973001001
1974001001
1975011002
1976013004
1977002002
1978001001
1979000000
1980001001
1981002002
1982001001
1983000011
1984020002
1985000000
1986004004
19870280010
19880760013
1989072009
199002960035
199112450030
199232470034
199336770077
199431141700134
19954851100100
199628220187
1997379170099
199827870087
199914060047
20002114600122
20011841500100
20020972200119
200331302700160
200431922300218
200511064000147
200651504500200
200731977700277
200821695900230
20092587200132
201058311500203
20110659500160
2012102146500289
201362828400372
201433549300450
201593838100473
2016636210300471
2017741811600541
2018947215000631
20191554315800716
2020171718800906
2021369721400914
2022377413200909
202302170019
2024000000
Total12173192121029563