*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197040404654
1970002035
1971000055
1972001045
1973001045
1974002068
1975101079
19760030710
19770070815
19780070613
19790040812
19800060814
198100401115
198200301215
198300201113
198400301316
198501101113
1986031001023
1987021301328
198802501724
1989071301232
1990022601341
199127250943
199216141931
199304440115100
199429861021182
199527237114126
199638057012152
1997416385120273
1998424042018304
1999313239020194
2000319155024273
2001318249028262
2002321994018334
20031243108017369
2004128481020386
20055166175029375
20064221177026428
20072164153221342
2008145302820376
2009370246041360
2010130288029348
201122382145432
20121231811480299
2013141741113203
201404210501148
201517491664
201600120416
2017103015
Total5927723132417966800