1983

7.3

2016

8.3

1995

6.7

2012

6.9

1998

7.3

1998

2.0

2005

7.0

2000

2.9

1990

7.7

2004

6.5

2013

8.0

2006

7.1

2005

6.0

2023

7.1

1990

7.9

1985

6.2

1995

7.7

1933

7.5

2007

6.5

2008

6.4