*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19772
19782
19790
19800
19810
19820
19830
19840
19852
19860
19872
19887
19891
19905
19911
199218
199318
19949
19957
19962
19970
19983
19994
20002
200114
20026
20031
20041
20050
200620
20070
20088
20094
20105
20113
20122
20131
20140
20151
20161
20170
20181
20191
20200
20210
20220
Total157