*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001004041
1970000000
1971000011
1972000033
1973001045
1974002035
1975000055
1976000055
1977000066
1978000055
1979000077
1980011057
1981001089
19820020810
1983001078
1984001089
19850030811
19860150915
1987011301125
1988001701330
19890250815
199011160826
19911470719
1992257401073
1993081501096
1994374717015782
1995277114116804
19960671706684
199702198013240
199804436011460
1999040501156
2000060417016637
2001017419015208
2002034815013376
200301131106130
200403867011404
2005012113014148
200602069019234
200722841609311
20080912806125
200900370845
20100683502105
2011049440295
20120173902184
2013046470093
2014060280088
201500110011
2016052007
2017000000
Total11577847913946663