*Excludes Observations that spanned multiple years

Pre 19707
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19880
19890
19900
19910
19921
19930
19940
19951
19960
19970
19980
19990
20000
20011
20021
20030
20044
20055
20060
20076
20086
20095
201024
20119
201227
20130
20144
20150
20160
20170
20182
20190
20201
202168
202232
20231
20240
Total205