1925

8.0

2006

7.9

1998

6.2

2015

7.2

2007

6.6

2009

6.7

2004

5.8

2007

6.4

1986

6.0

1968

5.5

2001

5.1

1991

7.3

1992

7.3

2024

7.0

1984

7.2

1994

6.2

1966

5.7

1962

5.9

1971

6.2

1964

6.4