*Excludes Observations that spanned multiple years

Pre 197060
19709
19712
19725
19734
19748
19756
19765
19775
19787
197914
198011
198111
198213
198325
198440
198532
198646
198767
198869
198962
199071
199182
199282
199373
199491
199589
199697
1997115
1998129
1999137
2000149
2001153
2002152
2003179
2004156
2005164
2006174
2007169
2008134
2009152
2010175
2011141
2012159
2013147
2014147
2015132
201640
20170
20181
20191
20201
20210
20220
Total3993