2005

7.8

1987

7.8

1999

7.5

2006

8.4

1998

10.0

1998

7.0

2018

8.4

2023

0.0

2021

6.0

1991

6.6

1997

8.2

1998

7.9

1997

6.4

1976

4.5

2004

8.1

2010

4.8

2015

5.2

2013

2.5

2009

3.0

2014

8.0