2007

6.3

1998

5.5

2008

5.3

1968

6.8

1988

5.9

1962

7.6

2009

6.4

1959

7.0

1969

7.3

1978

5.9

1964

6.2

1960

6.2

1972

6.7

1964

7.1

1959

6.0

2003

4.6

1997

7.6

2016

0.0

1972

5.0

1970

7.1