*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19753
19762
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19901
19913
19921
19930
19941
19950
19960
19971
19980
19990
20000
20010
20021
20030
20042
20052
20060
20070
20080
20094
20103
20116
201210
20136
20144
20153
20161
20170
20180
20190
20200
20210
20220
20230
20240
Total54