2009

7.1

2010

6.7

2007

5.2

2011

6.8

2004

6.4

1988

7.0

2022

6.2

2018

6.1

2019

5.6

1985

7.0

1984

6.7

2001

7.4

2005

7.2

2002

7.5

2006

7.0

2006

6.5

1999

6.8

2025

8.0

1965

7.2

2007

4.6