*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19753
19763
19770
197810
19795
19800
19810
19822
19831
19849
19850
19861
19871
19885
19891
19901
19911
19923
19934
19946
19956
199617
199720
199825
199958
200043
200140
200232
200353
200442
200572
200698
200738
200870
200984
2010122
201192
201242
201340
201445
201540
201631
20171
20180
Total1168