*Excludes Observations that spanned multiple years

Pre 197012
19700
19710
19720
19731
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19841
19850
19860
19870
19883
19890
19902
19910
19921
19931
19943
19951
19960
19972
19980
19990
20001
20012
20021
20036
20043
200518
200612
20075
20088
200914
201027
201135
201225
201322
201418
201524
201630
201726
201827
201922
202015
202124
202216
20230
20245
Total413