2004

7.5

1967

6.5

2005

4.9

1982

4.2

2001

7.5

1977

8.1

2011

6.6

1959

6.2

2000

7.3

1963

7.5

2017

4.2

2008

4.1

1968

5.6

1969

8.0

1967

7.2

1964

5.0

2000

5.0

1979

6.3

2016

6.0

2013

5.9