2002

7.7

2003

6.0

1994

8.5

2010

6.6

1994

8.0

2001

7.2

1990

7.4

1988

5.7

2012

6.3

1967

6.6

1988

6.9

1984

6.3

1996

6.9

1963

7.9

1985

8.3

1995

8.2

2015

6.5

2007

6.7

1961

6.9

1987

6.3