*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19844
19850
19860
19870
19883
19893
19908
19911
199211
199310
19942
19954
199610
19974
19985
19999
20007
200112
20029
200319
200418
200523
200621
20076
200844
20096
20105
20117
20125
20139
20145
20151
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total271