2001

8.1

1960

7.1

2002

8.2

1993

8.0

1999

8.0

1990

6.4

1992

6.9

2011

7.3

1998

7.0

2017

8.3

2005

6.4

2004

7.8

2013

8.3

2000

6.2

2004

6.6

2017

8.0

1999

7.9

1980

6.5

2006

7.8

2021

6.9