*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19731
19740
19750
19760
19770
19782
19790
19800
19810
19820
19831
19840
19851
19860
19870
19880
19890
19903
19911
19921
19933
19945
19951
19962
19972
19982
19990
20000
20011
20020
20031
20041
20050
20060
20072
20082
20090
20102
20116
20125
20135
20141
20151
20162
20172
20181
20191
20200
20210
20220
Total59