*Excludes Observations that spanned multiple years

Pre 197011
19700
19710
19720
19730
19740
19750
19760
19770
19784
19790
19804
19811
19821
19830
19840
19850
19861
19873
19883
19890
19901
19911
19920
19930
19941
19950
19961
19972
19981
19990
20000
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20110
20122
20138
20140
20151
20160
20171
20182
20196
20200
20211
20220
20231
20240
Total57