*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 19700020155157
1970001045
197100001010
1972001078
1973001089
1974002079
19750120912
197600301417
197700401620
197800301417
197900601925
198001801726
198100601925
198200402226
198300202123
198400202022
198501301923
1986011202639
1987052302755
1988031302339
1989042502655
1990133712264
19917132312266
199236912222108
1993713326327196
1994522940030304
1995820726429274
1996429035123353
1997228119136339
1998832631128394
1999510318125152
2000641141138497
2001624840248344
2002245775145580
2003342651228510
2004245037028517
2005119570240308
20063271146237459
20071366136538546
20081265174938487
20095145220065435
20103278333177692
201101164731110700
201212371887149582
20130248265331547
2014132886223440
201501880034132
201602250032104
20172173003887
201802502128
201932014937
20200152210
2021043007
Total906225286959167810921