1985

6.6

2006

8.4

1961

7.5

1992

8.5

2004

9.5

2015

7.7

2016

8.6

1983

8.1

2008

8.0

2013

7.2

2001

7.9

2019

8.1

2006

8.2

2020

8.0

2004

8.3

2005

8.3

2022

8.3

1999

7.4

1999

7.5

1992

6.8