*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001630019
1970000000
1971020002
1972110002
1973010001
1974000000
1975020002
1976110002
1977000000
1978000000
1979011002
1980002002
1981012003
1982011002
1983002002
1984000000
1985000000
1986020002
1987011002
1988000000
1989001001
1990040004
1991011002
1992010001
1993011002
19942830013
1995052007
1996170008
199703910040
199811810020
199901120013
200006330066
200102920031
200206360069
200304750052
200407170078
200511031300117
2006039270066
200709440098
200808430087
200901103000140
201003270039
2011026170043
2012087110098
201301252000145
201411801600197
2015136200057
2016159320092
20170991300112
2018171260098
20190961900115
202001700017
202101100011
2022000000
Total111666305001982