*Excludes Observations that spanned multiple years

Pre 19705
19700
19710
19720
19730
19740
19752
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19889
19890
19902
19912
19920
19931
19940
19950
19960
19970
19980
19995
200012
20010
20025
20031
20040
20050
20060
20078
20082
20090
20101
20111
20120
20130
20140
20151
20162
20170
20184
20196
20205
20213
20226
202322
20240
Total105