*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197023150828
1970002002
1971010023
1972000000
1973002013
1974031015
1975002002
1976013004
1977006006
1978002013
1979015006
1980002002
1981003014
19820180312
1983003003
1984041016
19850340310
198600100212
198703100316
19880680115
19890360413
199001190323
199103210327
199224230433
1993049190270
199422462608282
199502124004256
199622353901277
199701023805145
199802613604301
1999044230471
200002123904255
200102324303278
200202134701261
200312713801311
200402284302273
200511224802173
20062967002170
200711008401186
20080768900165
200904511906170
2010412513601266
201119118905286
2012419721203416
2013830821601533
2014430525105565
2015537940704795
2016843736405814
201715529571041119
20189508484041005
20197599564041174
202095906660101275
20213628709061346
20222747314011064
202300320032
2024000000
Total9282346102014414572