2001

7.4

2010

7.8

2013

7.6

2005

7.8

2007

8.0

1975

8.3

1996

6.4

2004

8.6

1982

7.9

1993

7.9

2010

8.1

2002

8.0

2013

6.4

2024

8.5

1984

7.0

2011

7.3

1997

8.3

2002

7.4

2021

7.5

2008

7.5