1997

6.6

1992

6.9

1995

7.3

1995

8.0

2001

7.8

2002

7.4

1997

6.8

1997

6.8

2016

4.0

1998

6.9

2002

6.2

2007

5.5

1986

6.6

1974

6.8

2010

5.1

2025

6.3

2010

3.3

2003

6.7

1994

6.4

2023

6.0