*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19762
19770
19781
19790
19800
19810
19820
19832
19840
19850
19860
19870
19880
19891
19900
19910
19920
19930
19940
19952
19960
19971
19980
19990
200019
20013
20024
20034
20041
20053
20063
200710
200819
20094
201019
20112
20120
201310
20141
20151
20162
20173
201816
20190
20200
20210
20227
20230
20245
Total146