*Excludes Observations that spanned multiple years

Pre 197033
19701
19711
19724
19730
19742
19753
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19990
20000
20010
20020
20030
20040
20050
20069
20070
20080
20091
20100
20110
20120
20133
20140
20150
20161
20173
20181
20192
20202
20210
20220
20230
20240
Total66