*Excludes Observations that spanned multiple years

Pre 19704
19700
19710
19720
19732
19740
19752
19760
19770
19780
19790
19800
19813
19821
19830
19842
19850
19860
19870
19880
19890
19900
19911
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20021
20030
20040
20050
20060
20070
20080
20090
20100
20110
20120
20130
20140
20150
20160
20170
20181
20190
20200
20210
20220
20230
20240
Total17