*Excludes Observations that spanned multiple years

Pre 19701
19700
19711
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19866
198711
198848
19891
19900
19918
199215
19938
19945
199514
19964
19973
19981
19993
20000
20017
200218
20034
20044
20051
20061
20071
20084
20094
201019
20117
20120
20130
20142
20155
20163
20174
201810
201933
20207
20215
202211
20234
20240
Total283