*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19791
19801
19810
19820
19830
19841
19852
19861
19870
19881
19890
19900
199111
19929
199318
19942
19955
19961
19970
19981
19990
20000
20011
20023
20030
20040
20050
20060
20071
20080
20090
20100
20113
20123
20131
20140
20151
20160
20173
20182
20193
20209
20219
202211
20238
202415
Total127