2019

6.5

2009

5.6

2010

7.0

2002

6.8

2021

9.5

2004

8.6

2001

4.3

2012

6.0

1998

4.8

2004

6.0

2003

6.4

2011

7.2

1988

6.0

2019

9.8

1990

6.1

2017

5.9