*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19940
19950
19960
19970
19980
19991
20001
20011
20020
20032
20041
20052
20063
20072
20084
20091
20101
20111
201212
20130
20141
20150
20163
20174
20183
20193
20205
202121
202215
202317
20244
Total109