*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970115007
1970000000
1971010001
1972002002
1973021003
1974102003
1975012003
1976013004
1977009009
1978011002
1979013004
1980002002
1981024006
19820380112
1983004004
1984009009
1985012003
19860770014
198707120019
19880750012
198907130020
1990020140034
1991328300061
1992112260039
1993525270057
19945535700115
19954426600112
19962317200105
199710397801128
199855010200157
1999224560082
200036011700180
200142721800249
200234418900236
200338727900369
2004510017100276
2005413814700289
200628917200263
200718718300271
2008412514400273
200945817200234
2010210427100377
2011410921102326
2012732235901689
20131339641000819
201412579525001116
201516775627001418
201622911654001587
201712916739001667
201814961850011826
2019191187883002089
20201900010
20211840013
20221470012
Total196746279540615618