*Excludes Observations that spanned multiple years

Pre 197013
19700
19710
19720
19734
19741
19750
19760
19771
19780
19790
19800
19811
19822
19833
19842
19853
19860
19871
19881
19890
19901
19910
19920
19933
19941
19953
19963
19971
19983
19991
200045
200141
20024
20030
200411
20056
20063
20071
20080
20093
20100
20113
20122
20131
20141
20150
20160
20171
20180
20195
20202
20211
20222
20234
20240
Total184