*Excludes Observations that spanned multiple years

Pre 197045
19700
19711
19721
19731
19740
19750
19760
19771
19780
19791
19801
19810
19820
19830
19840
19850
19862
19870
19881
19891
19901
19911
19921
19931
19944
19956
19962
19977
199822
199911
20002
20015
20025
2003725
200496
2005103
200626
200724
200837
2009211
20102
20114
20121
20130
20140
20152
201614
201720
20180
Total1388