*Excludes Observations that spanned multiple years

  B
b
t
W
w
 
Pre 197001302125
1970001001
1971000000
1972000011
1973000011
1974012003
1975000011
1976001023
1977000011
1978001023
1979000011
1980001012
1981002002
1982010034
1983002013
1984011013
1985001012
1986003036
1987013026
1988106018
19891170514
199011130419
199123170426
199226290643
199351180428
1994213730391
1995213380154
199618390149
199724170831
199804390144
199912100114
200031270233
200123200328
2002317620587
200323320340
200425710482
200518221436
2006379707114
2007268905102
200817302343
200933180731
20102444806100
2011020290857
2012247450397
201314068012121
201413385707115
201525259013126
2016420262012280
20173807307163
201855581013154
20193738506167
2020865115015203
202156399013180
20227655508135
2023000000
Total97965167132472983