2007

6.3

2000

7.0

1976

5.3

2003

6.6

2014

6.5

2010

6.3

1992

6.6

1991

6.3

2019

6.7

1959

7.7

1975

5.8

1998

6.3

1998

7.4

2003

5.0

1966

6.8

2008

6.9

2002

5.8

1973

6.7

1925

7.5

2006

6.4