*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970000022
1970000000
1971000011
1972000000
1973000000
1974000000
1975001001
1976010012
1977000011
1978001012
1979001001
1980000011
1981104027
1982003003
1983001023
1984001001
1985002002
1986010056
19874142213
19883130815
19893170617
1990151160638
19911941711556
199291200838
1993123220744
19941801511145
199501101416
199660130625
1997701501537
19982001601046
1999135151842
200031130623
2001181170945
200281230335
200374200940
200440210328
2005131100630
200610110719
2007111201529
2008212101034
200981141529
201090120122
201160280741
201270180126
2013341701034
2014054100165
20155080518
2016101002
2017001001
Total226894447220986