*Excludes Observations that spanned multiple years

Pre 19706
19700
19710
19720
19730
19740
19750
19760
19770
19781
19791
19800
19811
19820
19830
19840
19850
19861
19871
19880
19890
19900
19910
19920
19930
19941
19951
19960
19970
19980
19991
20000
20011
20020
20030
20040
20051
20061
20071
20080
20092
20100
20114
20120
201317
20140
20150
20163
20173
20184
20191
20200
20210
20221
20230
20240
Total53