2004

6.2

2000

5.4

1998

10.0

1980

10.0

1999

6.7

2014

3.0

2008

6.6

1979

5.2

1963

5.5

2007

6.0

1994

6.7

2019

6.1

2005

4.2

2002

6.7

2010

7.0

2012

7.4

2023

6.3

1994

5.7

1922

4.8

2010

5.2