*Excludes Observations that spanned multiple years

Pre 197057
19700
19711
19721
19732
19742
19752
19760
19770
19780
19790
19800
19810
19820
19831
19841
19850
19862
19870
19880
19890
19901
19912
19920
19931
19941
19951
19962
19976
199811
19999
20008
200147
200255
20032771
2004432
20051778
200635
200759
200814
2009148
2010127
201133
201267
20139
201415
201510
201642
201729
20182
Total5784