1970

6.6

2003

7.6

1955

7.3

1956

7.1

1957

7.2

2006

6.8

1998

6.6

1992

7.4

1983

6.4

1962

7.3

1962

7.0

2015

7.2

2007

6.1

2022

6.5

2016

2.0

2007

6.8

1963

6.9

2002

7.7

2022

7.1

2008

7.0