*Excludes Observations that spanned multiple years

Pre 19702
19700
19711
19720
19731
19743
19753
19760
19771
19782
19792
19801
19811
19820
19831
19842
19852
19861
19871
19880
19891
19900
19912
19920
19931
19942
199520
19960
19973
19982
19996
20003
20010
20029
20030
20040
20051
20060
200710
20084
20090
20100
201114
20122
20131
20146
20151
20160
20171
20182
20192
20202
20213
202210
20235
20241
Total138