1956

7.0

1984

7.2

2004

5.6

2005

7.1

1991

6.8

1984

5.9

2008

6.3

2007

4.8

2006

6.7

1982

5.5

1959

6.9

2000

6.4

1997

6.1

1964

6.2

1996

0.0

1992

5.7

1983

6.6

2018

6.1

1995

5.9

2002

6.0