*Excludes Observations that spanned multiple years

Pre 1970151
19702
19710
19722
19731
19741
19751
19762
19773
19781
19793
19803
19811
19820
19830
19841
19852
19861
19872
19881
19891
19901
19913
19920
19932
19943
19955
19964
199712
19984
19996
200014
20017
20028
20034
20045
20057
20069
20072
200810
200917
201023
201111
201215
201319
201412
201538
201614
201725
201826
201938
202016
202132
202235
202316
202442
Total664