*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19709076022
1970100001
1971200103
1972100203
1973100102
1974100102
1975200103
1976100203
1977100102
1978000202
1979000303
1980200103
1981000505
1982000112
1983000202
1984101103
1985101305
1986103307
198700110011
1988102609
1989001203
199000017118
199120118021
199240220026
199360219027
1994301326042
1995701538161
199610644051
1997201737056
1998202122045
1999202527155
2000502623256
2001203828068
2002103831474
2003104018059
2004105328284
2005405111167
2006206229497
200721118123
200830022126
200900534342
201010244148
2011004611176
201200101911121
201300532332108
20140064630100
201500185932
20161058923
2017000101
2018000000
Total7716797211251603