*Excludes Observations that spanned multiple years

Pre 1970112
197027
197133
197259
197370
197487
197568
197665
197757
197860
1979100
1980143
1981155
1982174
1983178
1984214
1985240
1986273
1987196
1988202
1989315
1990415
1991333
1992404
1993418
1994351
1995342
1996349
1997338
1998392
1999427
2000363
2001430
2002436
2003452
2004591
2005564
2006573
2007539
2008587
2009616
2010680
2011547
2012534
2013408
2014407
2015493
2016137
20172
20180
Total14956