1959

6.9

1953

4.5

2018

7.5

2008

6.7

1982

7.5

2004

7.7

2003

5.9

1984

2.0

1978

4.0

2006

5.7

2006

6.7

2005

6.1

1985

6.2

1986

7.1

2007

6.3

1995

7.2

1983

4.5

2007

7.4

2008

5.3

1964

6.1