*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 1970001034
1970000000
1971000000
1972000000
1973000011
1974000022
1975000022
1976001034
1977000033
1978000033
1979000044
1980001045
1981000044
1982000044
1983000022
1984000044
1985001056
1986000055
1987000145
1988012058
19890390921
19900280313
1991006017
199232140423
1993113130835
19940432701181
199533282752
1996158120273
199701970834
199801860630
19990070916
200006040771
20010750921
200223590450
200301020820
200403350846
200502460838
200601330925
200714080958
200805680771
20090090615
2010016180741
2011012120731
2012045101864
2013019190341
2014016160436
201501410924
201601310721
20170920718
2018000000
2019010001
2020001001
2021000000
Total1161425332631144