1998

6.8

1929

6.2

2000

6.3

1986

5.8

2009

7.4

2012

6.6

2011

7.1

2024

6.2

1964

7.0

2017

5.9

1950

7.4

1964

7.0

1968

5.7

1989

5.1

2000

6.7

1962

6.9

1989

5.6

2010

6.0

1944

6.0