*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19870
19882
19892
19901
19912
19920
19930
19944
19950
19960
19971
19981
19994
20000
20010
20020
20031
20041
20051
20060
20070
20080
20090
20100
20110
20123
20130
20141
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total26