*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970715210043
1970001001
1971000000
1972001001
1973011002
1974008008
1975001001
1976000000
1977000000
1978012003
197965190030
1980312006
1981306160052
198223580036
19831221170050
19841110170038
19856950020
198698100027
19871915150049
19883525230083
198951190025
1990201003
19912513120050
199257423100130
1993720100037
19942329400092
199589141100114
1996128812900238
19971591335000342
19982481468700481
1999214443100289
2000180403100251
200172181200102
200285352500145
2003202361100249
20041283700138
2005142131300168
200612810800146
20071077400118
2008948300105
200961750028
20102619230068
2011155440064
20122012240056
20137740018
201411260019
20151436170067
2016316200039
201721470023
2018515160036
201951780030
202021340019
202173400041
202273160044
2023300003
2024001001
Total23791073777004229