*Excludes Observations that spanned multiple years

Pre 19704
19701
19711
19720
19730
19740
19751
19760
19770
19782
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19895
19900
19918
19923
199381
19944
19958
19960
19971
19980
19990
20001
20010
20023
20030
20045
20050
20061
20071
20086
20095
20102
20114
20120
20132
20140
20150
20163
20170
20180
20194
20202
20212
20223
20232
20244
Total169