2000

6.9

1995

6.3

2003

6.4

1996

6.6

1997

7.3

1998

6.8

1997

6.8

1965

0.0

1973

7.4

1962

0.0

1962

7.0

1998

6.5

1993

5.6

2002

6.8

1963

6.9

1970

0.0

1995

0.0

1961

7.1

1999

7.1

2018

7.0