1967

7.3

1991

7.8

2001

5.8

2002

6.7

1991

6.9

2017

10.0

2023

7.3

1996

6.3

1995

8.1

2001

6.6

1999

7.9

1984

0.0

2016

8.0

2013

7.4

2005

7.8

1994

8.2

2005

7.8

2011

0.0

1992

0.0

2006

7.3