*Excludes Observations that spanned multiple years

Pre 197053
19701
19711
19720
19734
19740
19750
19762
19771
19782
19790
19800
19810
19823
19833
19841
19851
19860
19871
19880
19892
19901
19913
19924
19931
19941
19950
19961
19971
19980
19991
20000
20011
20020
20030
20041
20050
20060
20073
20080
20092
20102
20111
20121
20130
20141
20150
20160
20170
20180
Total100