*Excludes Observations that spanned multiple years

Pre 197010
19700
19711
19720
19730
19740
19752
19760
19770
19783
19790
19801
19810
19820
19830
19840
19850
19861
19872
198826
19894
19902
199115
19928
199314
19943
19958
19964
19973
19982
199924
200017
20011
20020
20031
20040
20050
20061
20071
20084
20097
20103
20116
20120
20132
20141
20153
20168
20176
20187
201921
202029
202162
202217
Total330