*Excludes Observations that spanned multiple years

Pre 197041
19700
19710
19721
19730
19740
19750
19760
19773
19783
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19920
19930
19941
19951
19960
19970
19980
19990
20000
20010
20020
20031
20040
20051
20060
20070
20082
20090
20100
20110
20124
201322
20141
20150
20160
20170
20180
20190
20200
20215
20220
20231
20240
Total87