2009

5.8

1991

5.4

1992

6.6

2016

0.0

1980

7.0

1978

6.0

2003

8.0

2005

7.2

2000

8.2

2000

8.2

1994

8.3

1932

7.8

2000

7.4

1982

6.7

1986

7.6

1984

6.2

2004

6.5

2014

6.3

1999

7.3

1973

7.5