*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197002805969
1970002046
1971002046
1972011057
1973001067
1974013048
1975001067
197602201014
197702301217
1978010067
197910101012
198000201315
198100001717
19820020810
198300301619
198401201720
198500801725
198614601324
1987011301529
1988021601735
1989012401540
1990015411636
19913122111148
1992271101333
199309131012134
1994119158017267
1995418394112294
1996024346014303
19970512201386
1998073601089
199901470526
2000110311016131
20010711001596
20020762107104
2003262140886
20040641301087
2005015161840
20061401521270
200707437014125
200811083709155
20090224101073
201039687018204
201116786011165
2012319583121303
20131422463010311
20148258116025407
201519234155038446
201610307144023484
201720561264019864
201822526191127767
20199575343327957
2020128874070441350
202187293560611154
20225617220043885
202310410042
2024000000
Total152680931711187311016