*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19756
19767
19770
19784
19793
19802
19812
19824
198314
19846
19859
19864
19876
19884
19892
19903
19915
19924
19934
199422
199522
199646
1997176
199897
1999142
200055
200169
200279
2003102
200459
200566
200687
200767
200842
200981
2010150
201197
201290
201361
201472
201556
201617
20170
20180
Total1846