2014

6.1

1956

7.3

1962

6.2

1969

7.8

1994

4.1

1972

5.8

2006

7.5

1971

6.4

1981

6.5

1997

4.6

1970

7.3

2005

6.1

2007

6.3

1992

5.0

1982

5.2

1988

6.6

1976

7.2

2004

6.2

2003

6.1

2000

7.1