*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970012003
1970000000
1971010001
1972000000
1973000000
1974000000
1975001001
1976021003
1977002002
1978001001
1979100001
1980001001
1981002002
1982010001
1983000000
1984000000
1985000000
1986031004
1987012003
1988041005
19890850013
199001420016
19918750020
19920840012
199301780025
1994140110052
199501490023
199602150026
199715130055
199814720050
199913080039
200004080048
200103780045
2002043120055
2003553140072
20040912500116
2005053180071
20061862300110
2007055130068
2008030320062
2009233310066
2010030320062
20110755100126
201201496300212
201301122200134
201411491400164
201501741800192
201612303700268
201732933600332
201822922800322
201923056900376
202003208400404
202103474300390
202223165200370
202303170020
202406100016
Total323592836004460