*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197006150021
1970003003
1971061007
1972000000
1973002002
1974010001
1975010001
1976003003
1977005005
1978022004
1979012003
1980112004
1981013004
1982012003
1983003003
1984121004
1985033006
1986015006
198716120019
19880380011
1989012190031
199023330038
199122070029
199222990040
1993059140073
199451473300185
1995166150082
19961871200100
199751461800169
199811621400177
199911731200186
200022293700268
200132002400227
200202194000259
200333844400431
200405553800593
200532665900328
200643268400414
2007236011900481
200812798200362
200931909000283
2010225118500438
2011312516800296
2012756312800698
2013650518100692
20149835220001064
20151562429800937
20161260936500986
201717748370001135
20188797558001363
201915892563001470
20206909774001689
2021111033827001871
202251135475001615
202305330038
2024000000
Total1601300859900019158