5.4

2012

6.2

2023

8.4

2003

6.2

1991

7.5

6.3

1975

4.5

2009

6.1

1999

6.6

1990

6.3

2003

8.0

2015

5.8

2010

7.1

2004

7.3

2011

5.9

2008

7.8

1945

6.1

2007

6.8

6.4

1995

7.4