*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000537262
1970002002
1971002002
1972002002
1973002002
1974002002
1975002002
1976002002
1977002305
1978001102
19790028010
1980003609
198100210012
19821027010
1983002507
19840028010
198500211013
19860029011
1987002507
198820313018
198900415019
199000525030
199110423028
199200537042
199310525132
199410544252
199510552159
199600356059
199720346051
199800450054
199900441045
200000449053
200110660067
200200558063
20030051381144
200440678088
200500587193
2006104951101
20070041100114
20081011380140
20090062310237
20100062530259
20112052761284
20124001160120
201300059059
201400030030
201500128029
201600011011
2017000404
2018000000
Total2201972328102557