*Excludes Observations that spanned multiple years

Pre 197033
19700
19710
19720
19730
19741
19751
19761
19778
19787
19790
19801
19810
19820
19830
19840
19850
19860
19870
19882
19890
19901
19910
19920
19930
19940
19950
19961
19970
19980
19990
20000
20010
20020
20031
20040
20050
20060
20071
20080
20090
20100
20110
20120
20132
20140
20150
20164
20171
20181
20190
20200
20210
20221
20230
20240
Total67