1986

5.0

2003

5.8

2016

7.1

2011

6.0

2008

4.5

2000

2.9

2008

5.8

2008

4.4

2009

3.8

2008

5.6

2009

6.6

2006

5.5

2007

6.5

1978

7.5

1992

7.0

2020

6.3

2023

7.1

2008

5.1

2006

7.6

2006

6.4