*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197005160021
1970005005
1971080008
1972001001
1973005005
1974005005
1975023005
1976001001
1977101002
1978011002
1979003003
1980010001
1981001001
1982003003
1983022004
1984024006
1985031004
1986022004
198702100012
19880890017
19890480012
1990119110031
199121880028
1992130190050
199315880067
199421822300207
1995158100069
19960991300112
19971106600113
199811051400120
199906290071
200001562600182
20010165900174
200202412700268
200302542800282
200412171800236
200521552800185
200621724100215
200711884800237
200811304700178
20091586900128
2010231710800427
201116310100165
201271888000275
2013529710600408
201433319800432
2015239012000512
2016643616300605
2017748212200611
2018351621200731
2019557023100806
20204802386001192
20211809338001148
20221765265001031
202303170020
2024000000
Total66848228900011438