*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19751
19760
19770
19780
19790
19801
19810
19820
19830
19840
19851
19860
19870
19880
19891
19900
19911
19920
199312
19940
19951
199644
19970
19982
19992
20000
200111
20026
20030
20040
20050
20062
20070
20081
20092
20102
20111
20121
20133
20140
20150
20163
20171
20181
20192
20201
20210
20221
20230
20241
Total107