*Excludes Observations that spanned multiple years

Pre 19702
19700
19710
19720
19730
19740
19752
19760
19770
19780
19791
19800
19811
19820
19831
19840
19851
19860
19870
19880
19890
19900
19910
19921
19930
19944
19953
19960
19970
19980
19991
20000
20011
20020
20030
20040
20050
20060
20070
20080
20090
20106
20110
20122
20130
20141
20153
20164
20170
20182
20194
20200
20213
20220
20234
20245
Total52