2008

8.5

2000

7.2

1964

7.1

2015

7.8

2003

8.0

1997

6.2

2012

6.7

1965

6.8

1994

8.5

2003

6.0

1990

7.4

1985

8.3

2010

6.3

2005

6.3

1992

8.1

1967

6.6

1999

5.6

1997

6.1

1972

7.3

2009

6.7