2004

7.8

2006

6.2

1993

7.7

1983

8.2

1959

8.0

1956

6.7

2005

6.3

2022

4.0

2016

6.5

2014

4.5

2001

6.2

2006

6.2

1986

6.1

1987

6.9

2000

6.8

2003

6.3

1981

6.5

1992

6.4

1983

5.2

2004

6.8