*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197061001062
1970100102
1971300104
1972500106
1973400004
1974200103
1975300003
197612002014
197710005015
19788005013
1979120116029
1980110114026
198113057025
198215098032
198312094126
198414030017
198518013123
198621039235
198719046332
198818079438
1989150212130
19901426271362
199120118361287
19921508352381
1993212614750
1994250134221101
1995272740581
19961508361372
1997281549588
199816013511494
19991803251258
20002203471183
20012908392197
2002200740370
20032008431788
2004220145511102
2005210158211129
200624123505103
20072321649898
2008181157521130
2009161171134151
2010801913914180
201130121056126
20122706687108
20131007999125
201430632205246
2015202345373
2016301113330
2017103217
2018000000
Total7481336515364973159