2008

2.0

2008

1.5

1981

6.5

1972

6.2

1991

6.2

1990

6.7

1993

5.5

2014

7.0

2007

6.1

2004

8.1

1993

5.9

2006

6.1

1999

6.0

2001

7.2

1986

6.8

1994

6.2

1976

7.3

1995

6.3

1985

6.5

2004

5.7