*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700470011
1970001001
1971010001
1972001001
1973002002
1974012003
1975011002
1976030003
1977003003
1978011002
1979011002
1980010001
1981002002
1982012003
1983001001
1984002002
1985005005
1986023005
198701150016
198801160017
198902180020
199011250018
19910770014
1992196700104
19930317700324
199419422100964
199519111000922
19961899400904
199705541000564
19980696900705
19990108800116
200008501100861
200114091500425
200208791900898
20030359800367
20040893900902
200502491100260
20060339600345
200706472600673
200802622700289
2009011240035
201011986500264
201101474800195
201202904300333
201303134500358
201423996300464
201513827800461
201605257800603
2017151410300618
2018365713300793
2019148110400586
2020061915700776
2021246012301586
202205378200619
2023013004
2024020002
Total171498514520116455