1996

6.6

2000

7.6

2004

7.4

2001

7.8

1995

8.0

1987

7.1

2000

7.4

2005

7.2

1987

7.2

2005

7.0

2002

6.2

2024

6.7

2003

6.7

2009

6.4

2014

6.5

2025

0.0

1999

6.7

0.0

2013

7.8

1984

7.5