*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19741
19750
19760
19770
19780
19790
19800
19810
19820
19830
19841
19850
19860
19870
19880
19890
19902
19912
19920
19930
19940
19950
19963
19971
19981
19991
20001
20010
20020
20038
20040
20054
20063
20072
20082
20093
201018
201110
20129
20137
20149
20157
20166
20178
20188
201912
20207
20216
20222
20230
20240
Total145