*Excludes Observations that spanned multiple years

Pre 19700
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19822
19834
19840
19850
19860
19870
19880
19890
19903
19913
19925
19932
19944
19952
19966
19973
19980
19997
200012
20013
20024
20036
20044
20051
20060
20075
20086
20093
20101
20112
20121
20130
20140
20150
20160
20170
20180
20190
20200
20210
20220
20230
20240
Total91