2013

9.5

2006

5.5

2007

5.6

2006

5.2

1997

6.0

1963

6.7

1967

4.8

1965

6.2

2004

7.1

2006

7.6

2005

6.2

2003

6.3

1987

7.5

1989

8.0

1990

6.1

1985

6.6

1954

7.2

2009

6.6

1981

1.0

2025

9.0