*Excludes Observations that spanned multiple years

Pre 19705
19702
19710
19720
19731
19740
19750
19760
19770
19783
19790
19801
19810
19821
19830
19841
19851
19860
19870
19883
19890
19900
19911
19920
19934
19943
19950
19961
19977
19983
19991
20006
20011
20020
20031
20040
20054
20063
20078
20082
20091
20101
20113
20122
20139
20140
20150
20160
20170
20184
20191
20201
20210
20222
20232
20240
Total89