*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970022404672
1970005038
19710090312
1972004015
19730080311
19740170210
19750180312
197600100515
197700130821
19781080514
197931170627
198041120825
1981201301328
1982101701331
198301170624
1984011001122
19851180616
198613210934
198700230629
1988212101034
198918320950
19904306209105
19913257309110
1992596101085
1993102791010138
19941053138017218
1995624101017148
19963398009131
1997333133015184
1998345138018204
1999232110014158
2000631171016224
2001810165120204
200223181011197
2003416241010271
2004420287011322
200525212014233
2006212279114308
2007311253220289
2008125286417333
2009214323011350
201087352015382
2011714374018413
2012424431053512
2013912810039870
20142047821067955
2015191997901061123
20162415113201281299
20172344144101091617
2018173514510911594
20192222143701101591
20201323186001202016
20211516158601331750
2022181416080831723
2023000000
Total298777179548152020557