*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19740
19750
19760
19770
19780
19790
19800
19810
19820
19830
19840
19850
19860
19870
19882
19890
19902
19914
19921
19936
19941
199532
19962
19970
199818
19999
20002
20010
20025
20031
20042
20050
20060
20070
20082
20090
20101
20111
20121
20131
20140
20150
20162
20172
201812
20192
20202
20214
202219
202332
202418
Total189