*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19750
19760
19772
19780
19790
19800
19810
19820
19830
19840
19850
19862
19871
19880
19891
19903
19910
19920
19930
19940
19950
19960
19970
19981
19991
20000
20010
20020
20030
20040
20050
20060
20070
20081
20090
20100
20110
20120
20130
20140
20150
20167
20171
20181
20191
20200
20215
20221
20230
20240
Total33