*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970100102
1970000000
1971300003
1972200002
1973200002
1974100001
1975100001
1976400004
1977500005
1978200002
1979400004
1980300104
1981600006
1982500005
198310001011
1984900009
1985700007
198611003014
198712008020
198817002120
198913002318
199015014424
199110569131
1992151417845
1993171192654
199422023249105
1995230710646
19962011341369
1997310192566
19982503223989
19992202142462
20003212272385
20013211332188
20022221472395
20032423363499
20042801204897
200533134044121
200632117425133
200731667337153
2008329111334189
2009260111510152
2010391315717217
201134102446285
20124920777135
2013101111514141
2014210151331
201510018019
2016000303
2017000202
2018000000
Total745375213875552776