*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19730
19741
19751
19760
19770
19780
19790
19800
19810
19820
19830
19840
19851
19860
19870
19880
19890
19900
19910
19921
19930
19941
19952
19964
19970
19981
19990
20000
20010
20022
20030
20040
20051
20060
200710
20081
20090
20100
20111
20120
20130
20140
20154
20163
20171
20184
20196
20200
20210
20222
20231
20240
Total51