*Excludes Observations that spanned multiple years

Pre 19705
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19841
19850
19860
19870
19880
19890
19901
19910
19921
19930
19940
19951
19961
19970
19980
19991
20000
20010
20020
20030
20041
20050
20060
20071
20081
20090
20100
20110
20121
20130
20141
20150
20163
20173
20182
20193
20200
20210
20220
20230
20240
Total29