*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
199411282100150
199511631800182
199601941800212
1997054130067
199801921300205
199902290031
200002091500224
200101192400143
200201783000208
20030913300124
200401431700160
2005050310081
2006033390072
20070466500111
20080653900104
2009018520070
20100559200147
201103110000131
201208410300187
2013010510800213
2014010213800240
2015112823700366
2016017223900411
2017120431200517
2018122429900524
2019120730900517
2020024336100604
2021028537700662
202203303500365
2023003003
2024000000
Total639263249017182