1998

7.1

2004

6.6

2007

6.1

1991

6.2

1990

6.7

1993

5.5

1990

6.2

2003

5.3

2025

5.7

1994

4.5

1985

7.5

2007

6.5

2001

6.8

2017

6.1

1998

4.4

1996

6.5

2004

7.5

2003

5.5

2008

7.3

2000

5.8