*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19783
19790
19800
19810
19821
19830
19841
19850
19862
19870
19883
19890
19903
19911
199210
19936
19943
19952
19960
19970
19981
19990
20000
20010
20020
20031
20043
20050
20060
20070
20080
20090
20101
20110
201213
20134
20141
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total59