*Excludes Observations that spanned multiple years

Pre 197059
19701
19711
19721
19731
19742
19750
19763
19770
19780
19796
19800
19811
19821
19835
19841
19850
19861
19870
19880
19890
199058
199166
199240
199312
199417
199518
19961
19973
19983
19993
20002
20019
20022
200311
20043
20054
20068
200710
20085
20099
201019
201110
201263
2013101
2014181
201515
201617
20173
201825
201922
202028
202116
20222
20230
20240
Total869