*Excludes Observations that spanned multiple years

Pre 197041
19702
19710
19720
19730
19740
19750
19760
19770
19782
19790
19800
19810
19821
19830
19840
19850
19862
19870
19880
19890
19900
19911
19920
19931
19940
19950
19960
19970
19980
19991
20000
20010
20020
20030
20040
20050
20060
20070
20080
20090
20100
20110
20120
20130
20140
20151
20163
20170
20180
20190
20200
20210
20221
20230
20240
Total56