*Excludes Observations that spanned multiple years

Pre 197044
19702
19719
19722
19732
19740
19751
19764
197716
19786
19796
198010
19814
19826
198312
19849
198586
1986202
1987320
19881133
1989780
1990106
1991558
1992410
1993915
19942069
19951114
1996959
1997630
1998164
1999138
2000125
2001169
2002138
2003278
2004403
2005389
2006286
2007342
2008381
2009322
2010407
2011325
2012288
2013285
2014296
2015281
2016290
2017239
201834
201950
20203
20213
Total15051