*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19702024210
1970000202
1971000000
1972000000
1973000101
1974000202
1975000314
1976000505
1977000707
1978000303
19790007310
19800015410
1981000415
1982000617
1983000202
1984000606
1985000213
1986000617
1987000617
1988000516
1989000141024
199000074047
1991000192443
1992001171735
199300215154171
199400422533559
1995001025588623
199600714418439
19970051912021226
1998001222885919
199900016633649
200000123891915
200110223836862
20020006410421106
20030025212601314
200400127814931583
20050052478781130
200600416810521224
200700112110651187
2008004122615741
2009005149677831
2010001919511741388
20110016252598866
201200616310971266
2013001150745896
201400580703788
2015001323063
20160007310
2017000000
2018000000
Total3012821921867921002