*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197002110013
1970002002
1971000000
1972000000
1973001001
1974010001
1975025007
1976021003
1977103004
1978013004
1979012003
1980000000
1981004004
1982004004
1983010001
1984034007
1985013004
1986045009
198715160022
198803200023
198905260031
199002370030
199131570025
199211891100201
199314001200413
19943102522001050
199516841600701
19962796700805
199713561300370
19980727700734
199901731500188
200009401700957
200104791900498
200206272800655
200314272600454
200407611200773
200513012700329
200622992600327
200724475100500
200802443800282
2009141410083
201012719800370
20111747700152
201232608000343
2013639811600520
2014232616200490
2015546415300622
2016558517200762
2017658719800791
2018260323000835
2019851925900786
2020262730500934
2021448927600769
2022057321200785
2023005005
2024002002
Total661476128570017684