*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
19881
19890
19900
19918
19929
19933
19941
19952
19961
19972
19980
19990
20000
20010
20020
20031
20040
20050
20061
20071
20084
20091
20100
20110
20120
20132
20140
20150
20162
20171
20182
20195
20201
20219
20227
202314
20244
Total82