*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19831
19843
19852
19866
19871
19881
19893
19900
199130
19921
19932
19945
19952
19960
19970
19980
19990
20000
20010
20021
20031
20040
20050
20060
20070
20081
20095
20100
20113
20120
20130
20140
20150
20160
20172
20180
20193
202065
20211
20221
20230
20240
Total141