*Excludes Observations that spanned multiple years

Pre 197049
19702
197111
19725
19731
19740
19751
19762
19778
19788
19793
19803
19810
19824
19834
198424
1985233
1986241
1987251
19881034
1989221
1990142
1991417
1992201
1993540
19941184
1995668
1996576
1997539
1998132
1999235
2000152
200170
200274
2003232
2004260
2005230
2006231
2007233
2008266
2009286
2010237
2011221
2012269
2013253
2014243
2015253
2016233
2017197
201849
201964
202030
202164
202244
20236
20240
Total10936