2003

7.1

1999

7.5

1998

6.0

2003

6.5

2008

6.8

1994

6.5

1975

6.5

1994

6.5

1945

7.6

2007

5.6

2004

5.8

2014

6.1

1993

6.7

1996

5.8

2018

10.0

2012

1.3

1974

4.2

2020

4.8

2021

5.5

1995

5.1