*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19833
19841
19850
19861
19871
19880
19890
19900
19911
19920
19932
19941
19952
19961
19970
19981
19990
20000
20010
20020
20039
20041
20050
20060
20070
20084
20090
20100
20110
20121
20131
20140
20151
20162
20170
20180
20190
20200
20210
20220
20230
20240
Total36