*Excludes Observations that spanned multiple years

Pre 19708
19700
19710
19720
19730
19740
19750
19760
19773
19781
19790
19802
19810
19820
19830
19840
19851
19867
19870
19887
19891
19907
19915
199218
199334
19949
199532
199611
19974
199810
199913
20007
20015
20029
20035
200440
20055
200616
200724
20089
20097
20107
20113
20123
20132
20144
20152
20164
20177
201811
20195
20202
20211
20229
20236
20240
Total366