*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19742
19750
19760
19770
19780
19791
19800
19811
19821
19831
19840
19850
19860
19870
19880
19891
19900
19910
19921
19931
19942
19950
19961
19970
19981
19990
20000
20010
20020
20030
20040
20053
20060
20070
20082
20091
20100
20116
20120
20135
20144
201520
201627
20170
20185
20195
20207
202117
20225
20233
20240
Total123