*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000906170
1970002013
1971003036
1972001056
1973000044
1974003025
1975001034
197600301215
197700701017
19780050813
1979110701230
1980110401328
198160901328
1982901001635
198391901231
198430101418
198511701928
1986311002236
198743702135
198874901838
1989211501533
19906132721462
199118123812089
19928233501682
1993671822154
1994132145025104
1995755222793
19968134201578
1997555812897
1998141357017101
19993113401967
20003115502392
200192148030108
2002834702078
20039174902095
2004141159022106
20051511110022158
200625566128125
200716871227124
2008171989120146
2009214145130201
20101913169023224
2011177131028183
20123010222064326
20133015362080487
2014712164001117805
2015103315610149844
2016912376412001079
20171262280002171165
20181063284902191206
2019596578301921099
2020515470134201
2021104016
2022100012
Total950693635915215310170