*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19882
19890
19900
19911
19921
19932
19941
19950
19960
19970
19980
199913
200017
200116
20021
20031
20041
20050
20060
20071
20082
20092
20102
20113
20120
20132
20140
20150
20160
20170
20180
20191
20203
20212
20227
20234
20240
Total85