*Excludes Observations that spanned multiple years

Pre 197011
19702
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19860
19870
19880
19890
19901
19910
19924
19931
19941
19950
19960
19971
19982
19990
20000
20010
20021
20030
20040
20050
20060
20074
200810
20091
20103
20111
20121
20131
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total46