*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19731
19740
19750
19761
19770
19780
19791
19800
19810
19820
19830
19840
19850
19860
19870
19880
19891
19901
19910
19923
19935
19940
19950
19960
19970
19980
19990
20000
20010
20022
20030
20040
20053
20066
20070
20081
20090
201016
201116
20122
20131
20141
20151
201611
20174
20186
201927
202012
20212
20229
20237
20242
Total142