*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19702380013
1970004004
1971030003
1972001001
1973003003
1974012003
1975044008
1976224008
1977009009
1978013004
1979035008
1980014005
1981015006
19820380011
1983006006
1984015006
1985024006
19860780015
19871390013
19880990018
198911690026
1990049230072
1991415150034
1992313230039
19936803000116
1994131064900168
1995955340098
19961851180087
1997141663600216
199891713800218
199961123400152
200071384000185
200191093500153
200231027500180
200341596200225
200482355700300
2005111378100229
2006913911400262
200771158900211
2008118514400240
2009217812900228
2010214524400310
2011236221300298
20124626917800493
20132630219300521
20143037618900595
20154740223400683
20162951928100829
201740718277011036
201845714357001116
2019370791425001586
202037801524001362
202149972509001530
202233929328001290
2023000000
Total974907551880115238