1967

7.4

1991

7.8

2001

5.8

2002

6.4

1976

7.1

1997

7.6

2003

7.1

2014

5.2

2013

7.2

2010

5.0

2025

8.0

2022

0.0

2024

6.5

2005

0.0

2007

6.0

2006

7.1

2002

8.0

2006

7.7

2014

7.2

1976

6.0