*Excludes Observations that spanned multiple years

Pre 197016
19700
19710
19720
19730
19740
19750
19760
19770
19784
19790
19800
19810
19820
19830
19840
19850
19860
19872
19880
19891
19900
19912
19921
19930
19941
19952
19968
19971
19982
19993
20000
20011
20020
20031
20040
20052
20060
20070
20081
20092
20101
20111
201212
201316
20140
20150
20162
20170
201810
20195
20204
20213
20222
20230
20240
Total106