*Excludes Observations that spanned multiple years

Pre 197012
19700
19710
19720
19730
19740
19750
19763
19771
19781
19794
19802
19813
19822
19833
19844
19852
19861
19872
19882
19892
19902
19912
19922
19932
19944
199518
19967
19978
199811
19997
20005
20015
20029
20032
200417
200561
20064
20070
200877
2009233
201066
20118
20124
20137
20142
20150
20163
20171
20182
20197
20208
20213
20228
202315
20240
Total654