*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000140014
1970000000
1971003003
1972002002
1973002002
1974000000
1975001001
1976001001
1977005005
1978000000
1979107008
1980108009
1981107008
1982107008
1983202004
1984204006
19851270010
1986304007
19874150010
19885170013
1989113005
1990215008
19911270010
1992025007
199320100012
199422140018
199522150019
199642180024
199720120014
199830160019
1999117009
200050100015
200131110015
200200110011
200302160018
200420140016
200521230026
2006206008
200730220025
200820210023
2009122320046
2010111310043
2011111420054
201253230031
201370340041
201491350045
201570300037
201650300035
201762350043
201886500064
201950600065
202032670072
202101600061
202201260027
2023007007
2024014005
Total14942898001089