2014

5.6

1987

6.5

2002

8.4

2003

8.5

1962

6.9

1964

7.0

1971

6.4

2005

6.8

2001

6.4

1984

5.9

1992

6.8

2007

6.6

1995

7.3

1990

7.0

1955

6.0

1965

6.8

1967

6.7

2005

7.4

2014

4.8

2007

6.2