*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19751
19760
19770
19780
19791
19800
19810
19820
19831
19841
19850
19860
19872
19880
19891
19900
19911
199211
199318
19940
19951
19960
19970
19980
19990
20000
20011
20022
20030
20040
20051
20061
20073
20083
20091
20101
20113
20123
201318
20140
20150
20160
20170
20182
20191
20200
20212
20222
20230
20240
Total82