2009

7.6

1982

7.6

2005

6.9

1994

6.5

1992

6.9

2010

6.2

1984

7.2

1995

5.7

1998

8.2

2013

6.6

1999

6.8

1987

6.1

1975

8.4

1998

6.4

1953

8.0

2018

5.8

1955

6.4

1972

7.5

1980

8.5

2000

6.8