*Excludes Observations that spanned multiple years

Pre 19702
19700
19712
19720
19730
19740
19750
19761
19770
19780
19790
19800
19812
19820
19832
19841
19850
19860
19874
19884
19895
19903
19913
19929
19933
19940
199512
19965
19972
19982
19995
20003
20012
20020
20030
20040
20050
20060
20070
20084
20090
20108
20117
20120
20130
20140
20151
20166
20170
20184
201914
20208
20217
20227
20236
20240
Total144