*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19752
19761
19774
19783
19792
19803
19811
19821
19838
19842
19853
198613
198726
198816
19891
199017
199113
199246
199352
199444
199597
19968
19975
199820
199917
200028
200140
200214
200321
200454
200517
200613
200710
200821
200911
201061
201150
201224
201331
201435
201536
2016111
2017128
201870
201964
20200
Total1249