*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19741
19750
19760
19770
19781
19790
19801
19813
19820
19830
19842
19850
19860
19870
19881
19891
19903
19911
19920
19933
19941
19952
19960
19970
19980
19992
20000
20010
20020
20030
20040
20050
20060
20070
20080
20091
20101
20110
20121
20130
20141
20153
20161
20172
20182
20190
20200
20210
20220
20230
20241
Total35