2008

8.9

1985

8.5

1998

7.0

1996

7.7

1993

7.3

1998

7.1

1985

7.7

2018

8.2

2009

8.1

1991

7.6

1990

7.0

1983

7.8

2010

7.3

2002

8.2

2000

8.0

1999

8.3

5.8

2021

8.1

2004

7.9

1966

8.0