*Excludes Observations that spanned multiple years

Pre 197020
19700
19710
19721
19730
19741
19750
19762
19771
19781
19791
19800
19810
19821
19830
19840
19850
19860
19870
19880
19890
19900
19910
19921
19931
19940
19954
19960
19979
19980
19995
20004
20010
20026
20030
20040
20050
20066
20070
20081
20090
20102
20112
20120
20130
20140
20150
20161
20170
20180
20190
20200
20213
20220
20230
20240
Total73