*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000109394
1970002046
197100001010
1972000044
1973000077
1974001056
1975001089
197600201315
197700401317
197800101314
197900101516
198000101617
198100202022
198200202527
198300201719
198400102425
198500202123
198600502126
198700812332
198800402630
198900502126
199000302124
1991004102162
1992002302447
1993002313458
1994002123255
1995002913767
1996002902655
1997002123558
1998003703875
1999003602662
2000003304073
2001001503045
2002001902039
2003001701936
200400602329
2005003002858
2006002813463
2007001634160
2008002673568
2009002304669
2010003504479
20110060142103
20120073080153
20130094063157
201400129087216
2015001510146297
2016001830155338
2017001690176345
2018002240149373
2019002582143403
2020004090170579
2021003290219548
2022001410173314
202300150419
202400100010
Total0028012126605482