2006

6.1

2015

5.1

1985

6.1

1990

6.6

2015

6.9

2017

4.9

2004

5.9

2011

7.2

1993

7.1

2010

7.7

2005

5.5

1967

5.4

2020

5.8

2012

7.4

1966

6.1

2011

6.3

2008

8.7

1995

7.5

2002

7.7

2022

7.8