2005

6.3

1997

6.9

2017

7.0

1998

7.8

2016

4.2

1964

7.2

2007

7.3

2004

6.9

1958

6.3

1967

8.7

1971

7.4

1966

0.0

1989

3.7

2024

6.0

2000

6.3

1974

6.6

1994

3.5

1974

7.5

1966

5.4

2001

5.7