*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19841
19850
19860
19871
19884
19890
19900
19910
19923
19932
19940
19950
19962
19970
19980
19991
20000
20011
20021
20031
20042
20050
20061
20070
20083
20094
20101
20111
20120
20136
20141
20150
20161
20170
20180
20190
20201
20210
20222
20230
20240
Total42