2012

6.2

1931

6.9

1952

6.7

2006

5.6

1939

7.8

1952

6.2

2007

6.7

2015

6.0

2020

7.4

1921

6.8

1986

6.6

1955

7.4

1979

7.1

1970

7.0

2009

6.5

1979

6.6

1972

7.9

1992

5.7

1963

6.3