1968

6.9

2003

5.8

1940

7.1

2004

7.3

2011

6.5

1966

7.7

2010

5.7

2005

5.6

1951

7.2

1964

7.6

2020

6.0

1951

7.4

2004

6.5

2010

7.8

1977

6.3

1990

6.7

1983

6.8

2012

5.2

1953

7.2

1985

6.3