1992

6.5

2007

6.3

2009

5.8

1999

6.3

1998

5.5

2008

5.2

1996

5.9

1977

6.8

2018

7.0

1994

6.2

2008

4.1

2010

5.5

2002

4.3

1992

3.3

1995

4.7

2017

4.5

0.0

2023

6.7

2011

5.5

2024

5.3