2006

8.6

1979

6.8

1999

8.4

1990

7.6

1992

7.9

2007

7.9

2017

7.6

2004

8.0

2019

8.5

1965

7.2

2015

7.2

1973

8.0

2002

7.1

1980

7.7

2006

8.2

1986

8.3

2005

8.2

2010

7.8

2022

7.2

1992

8.2