2006

6.2

1956

7.1

1984

7.1

2007

7.5

2009

5.6

2005

6.4

2000

5.8

2008

4.8

2007

6.4

2010

5.8

2012

4.8

1985

7.2

1993

6.6

1987

4.1

1995

6.9

1990

6.4

2003

5.8

1987

7.1

2002

6.0

2018

5.9