*Excludes Observations that spanned multiple years

Pre 19701
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19801
19810
19820
19830
19842
19850
19861
19870
19880
19892
19902
19911
19922
19931
19941
19950
19960
19972
19980
19990
20000
20010
20021
200314
20042
20050
20062
20074
20081
20090
20100
20110
20120
20132
20140
20150
20161
20170
20182
20190
20201
20210
20221
20230
20240
Total47