*Excludes Observations that spanned multiple years

Pre 197022
19701
19711
19720
19730
19740
19750
19761
19771
19780
19791
19802
19811
19820
19830
19841
19851
19860
19870
19880
19890
19900
19910
19921
19934
19940
19950
19960
19974
19980
19991
20000
20011
20020
20032
20040
20050
20063
20071
20080
20091
20102
201115
20121
201312
201424
201534
201611
201719
201883
201938
20200
Total289