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*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19874
19881
19890
199015
19916
19928
199315
19947
19952
19960
19972
19980
19990
20006
20010
20020
20034
20042
20052
20061
20070
20085
20099
20105
20114
20127
201317
20143
20151
20163
20175
20184
20191
20205
20211
20221
20230
20240
Total149