*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197000304043
1970000011
1971001034
1972000033
1973001056
1974000022
1975000022
1976002046
19770060410
1978002024
197911110518
1980004037
1981004059
1982004026
1983003058
1984001034
1985101024
1986301037
19873270416
19881080817
198911101013
199025230737
199143151326
19921470618
199317130829
1994417360562
199511200628
1996252701145
199714240635
1998120480978
199915220331
200025581773
200100190120
200200320133
200311620468
200412680172
200502650572
200600480553
200700350843
2008016301680
200904430350
201001400546
20117811502132
2012617201392
2013104401863
20144136110013263
2015310185012210
201605176024205
2017415392029440
2018020186022228
2019327459019508
2020071303050
2021020002
2022000011
Total60322258024193383