*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970017008
1970000000
1971000000
1972001001
1973000000
1974012003
1975002002
1976032005
1977011002
1978001001
1979010001
1980011002
1981004004
1982002002
1983001001
1984005005
1985003003
1986027009
1987036009
1988042006
19890390012
19900960116
19910970016
199206140020
199307160023
199411282200151
199511631800182
199601941800212
1997054130067
199801921400206
199902290031
200002091500224
200101192400143
200201783000208
20030923300125
200401431700160
2005050310081
2006033400073
20070477800125
20080654100106
2009018570075
20100559600151
201103210200134
201219016400255
2013011718200299
2014012927700406
2015114749600644
2016020351000713
2017322968000912
2018226066200924
2019224865100901
202003530038
202103010031
2022011002
Total1133344384017730