*Excludes Observations that spanned multiple years

Pre 1970207
197023
197137
197261
1973143
1974347
1975402
1976287
1977129
1978186
1979204
1980238
1981236
1982235
1983343
1984522
1985359
1986475
1987428
1988420
1989485
1990551
1991379
1992405
1993428
1994452
1995528
1996571
1997533
1998596
1999656
2000614
2001623
2002748
2003748
2004869
2005893
2006820
2007909
20081067
2009848
2010997
2011721
2012732
2013819
2014178
20153
20161
20171
Total22457