*Excludes Observations that spanned multiple years

Pre 197017
19701
19713
19720
19730
19740
19751
19764
19773
19782
19791
19800
19811
19820
19831
19840
19850
19861
19871
19884
19892
19900
19910
19921
19939
19942
19959
199617
19979
19985
19994
20002
20010
20020
20031
20040
20050
20064
20075
20080
20090
20100
20111
20120
20137
20142
20150
20160
20171
20180
20190
20200
20210
20220
20231
20242
Total124