*Excludes Observations that spanned multiple years

Pre 1970110
19702
19710
19720
19731
19742
19756
19767
19772
197818
19799
19805
19818
19827
198340
198444
198537
198695
198734
198882
198992
1990102
1991124
199273
1993118
1994175
1995213
1996256
1997515
1998362
1999612
2000485
2001462
2002400
2003575
2004612
2005637
2006717
20071326
2008810
20091176
20101334
2011932
2012868
2013782
201439
20150
20161
20170
Total14307