2002

8.6

2006

7.9

2005

7.9

1987

7.1

1994

7.6

1975

7.2

2008

8.4

2011

8.1

2010

7.9

2000

7.6

2024

0.0

1996

6.2

2008

8.9

2019

7.1

2019

7.0

1997

8.0

1995

7.1

1968

7.1

2000

2.0

1999

7.3