2004

7.2

1976

5.5

1985

5.8

1982

7.3

2006

6.4

2003

6.5

2007

7.4

2016

4.2

2005

7.4

1994

5.9

2007

6.9

2019

5.3

1983

7.7

2020

4.0

2018

7.0

2008

6.9

1984

8.4

1992

6.6

1984

8.6

1987

6.0