*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19800
19816
19820
19832
19842
19851
19860
19872
19881
19890
19906
199113
199213
199316
19941
19951
19964
19970
19981
19990
20000
20010
200211
20031
200428
20050
20060
20074
200815
200915
20100
20116
20122
20136
20143
20151
20162
20174
20183
20197
20208
202110
20228
20232
20240
Total207