2003

6.8

2005

6.5

2000

6.0

2007

6.3

1994

8.3

2003

7.2

2005

6.6

2002

6.5

2003

6.5

1990

6.1

2002

7.0

1995

7.3

2002

6.2

1994

7.3

1996

5.4

2016

6.1

1998

6.4

1994

6.9

1992

7.4

1997

7.5