*Excludes Observations that spanned multiple years

Pre 19700
19700
19711
19720
19731
19741
19750
19760
19770
19780
19790
19800
19810
19820
19830
19843
19851
19860
19875
19881
19891
19901
19910
19922
19931
19946
199514
19962
19974
19982
19991
20000
20016
20021
200310
20045
20053
20060
20072
20080
20093
20102
20110
20123
20131
20141
20153
20160
20170
20180
20190
20200
20210
20222
20230
20240
Total89