*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197004130017
1970009009
1971011002
1972001001
1973012003
1974013004
1975023005
1976033006
1977114006
1978003003
19790480012
1980015006
1981115007
198202140016
1983002013
1984013004
1985035008
198606130019
198704140321
19880580013
198903120116
1990010110223
1991025340059
199211612101184
199316173103652
19943221440002257
19950207941002120
19960195733001990
199706202602648
19981121646011264
1999048230172
20004145257011514
200109106201973
20020161545001660
20031110647001154
20041193844031986
200522166401283
20061103774011113
200711492128011622
200808479000937
2009021412703344
2010341519003611
2011062822004852
20121977289021269
2013121238343011594
201421468330001800
201551317416011739
201631675491002169
201751718560012284
201871854629012491
201971562666032238
202021916890042812
202131653760022418
202241966342012313
202306230029
202405120017
Total7238215733604945672