1986

6.9

1991

4.7

1994

4.8

2005

5.6

2005

5.2

1994

6.0

1992

6.3

1986

6.3

1986

7.2

2008

6.8

2000

6.4

1983

5.0

2024

8.1

1995

5.9

2003

7.1

1998

4.4

2005

6.3

1988

6.1

1990

6.6

1996

6.5