*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197003703848
1970007018
1971000044
1972000000
1973002024
1974001023
1975013037
19760120710
197700140418
197800100313
197905220431
19801490014
19810170715
19820170412
1983004015
1984006028
1985003014
19860190414
198701200728
198801100718
1989071901137
1990040180462
1991132170555
1992128200756
199371392702175
199433775801439
1995116003603650
199662635901329
19977188434041929
199813139060051468
19991116638041209
200051607391121664
20012165340091704
200221934144022082
200372495103022607
200422756138052901
200541822411072244
200652301440032749
200732125188022318
200881190290031491
200961357392051760
201091775473012258
201121037500081547
201231879489082379
201331323476041806
20141916347031267
2015325010409366
201602810203133
2017215115902314
2018101002
20191192001194
202001800018
Total120327545365123738477