*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19758
19760
19770
19780
19790
19800
19810
19820
19830
19842
19850
19860
19870
19880
19891
19904
19913
19924
19930
19941
19951
19963
19976
19982
19995
20002
20012
20021
20033
20045
20056
20061
20072
200811
20091
20101
20114
201212
20132
20140
20150
20160
20170
20180
20190
20200
20211
20220
20230
20240
Total94