2000

7.6

1995

6.4

1989

5.0

1991

5.8

1994

7.8

2018

7.1

1994

8.4

2005

8.2

2007

8.1

1981

6.4

2009

7.5

2012

7.1

1989

8.3

2000

7.1

1996

0.0

2003

7.8

2002

8.1

2001

7.4