*Excludes Observations that spanned multiple years

Pre 19703
19700
19710
19720
19731
19740
19750
19760
19770
19780
19790
19800
19810
19821
19830
19840
19850
19861
19870
198810
19890
19900
19910
19923
19930
19941
19950
19960
19970
19980
19991
20000
20010
20020
20030
20040
20050
20062
20073
20085
20094
20101
20112
20123
20135
20142
20151
20164
20173
20183
20195
20203
20211
202214
20233
20240
Total85