1968

6.9

1989

6.3

2025

0.0

2001

7.7

2004

7.3

1992

7.6

1977

6.5

1963

7.2

2012

0.0

1986

6.8

1994

6.2

1976

7.3

2012

6.7

1993

7.8

1894

3.3

2013

7.5

1996

6.6

2013

0.0

2008

7.8

1982

7.1