2004

7.0

2006

7.4

1997

8.2

2003

7.2

1997

8.3

2000

7.9

1995

7.2

1986

8.0

2002

7.5

2015

6.2

2015

10.0

2013

7.2

1986

7.9

1966

7.4

2001

6.6

2011

0.0

1976

8.0

2000

7.0

1997

7.4

1990

7.1