2008

6.2

2007

5.6

2003

5.7

1958

6.4

1966

6.6

1954

4.6

1963

3.6

1967

5.8

1965

5.0

1972

5.1

1958

6.8

1962

5.0

2005

6.1

2005

4.9

1996

6.3

2003

7.2

1998

6.6

1953

7.2

2014

7.4

2004

7.3