*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970017008
1970000000
1971000000
1972005005
1973000000
1974001001
1975002002
1976001001
1977007007
1978102003
1979004004
1980007007
1981004004
1982005005
1983002002
1984005005
198502100012
198612170020
198711120014
1988007007
19890850013
199006100016
1991110260037
199231270031
1993411410359
1994421680295
19954109401109
1996310700083
199751011703135
19982199800119
199984450259
20003159601115
20016511103125
20020211600118
20038313703151
20042913501147
20053314000146
200621116001174
20078812702145
200861413500155
20097422800239
20106926400279
201141631400334
2012102041001441
2013182548801532
2014213951001571
2015212667902728
2016152185803897
201736391070061151
201830471170051252
201929371255001321
202024391499011563
202133351568041640
202226371387011451
2023000000
Total3555801355604714538