*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970002507
1970000202
1971000000
1972000101
1973000000
1974000000
1975000101
1976000303
1977000606
1978000202
1979002507
19800083011
1981001112023
1982001713434
198300241429
1984004228
1985001203
19860018110
19870019212
198800421025
198900315321
199000718631
199100725335
199200118726
199300333642
1994005325289
1995006411461
1996005212046
19971077725110
1998005612591
199900526637
200000106240112
2001001356271
200210478184
200300787397
200400280486
200500882292
2006001659479
20070010905105
2008003962101
20090059714116
201000161070123
20110071243134
201200469477
201300639146
201400012214
201500434240
2016000202
2017000202
2018000000
Total2024416392692154