*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001110108120
1970003047
1971002079
1972001078
19730020810
19740270413
19750040711
19760320914
197700501217
19780020911
197901701523
198000301619
198100101617
198201801827
198300501217
198402601725
198503601625
1986051102137
1987022601745
1988012601946
1989063302362
1990215511740
19916122211556
199238622114126
1993235524121403
199451269340191327
199541595224181643
199621238191141274
1997241022122457
1998267419125721
199918913117121
20002978311281040
2001466433132734
200201039571211118
2003080445120870
200421052480241126
2005217469230277
2006170785227822
20070725110033868
20082328116936491
2009386146046281
20101351235057644
20116317295070688
20128602291193995
20131074257511031431
2014977942401291341
20151074163812471637
20161780670012471771
20171496485312352067
201814104682522802167
201915853102962692172
2020141050155903672990
2021101096143634953040
2022699894713032255
202315190227
2024002002
Total180226771094146374137585