1992

6.8

2002

4.8

2018

7.0

1990

7.8

2003

8.2

2011

5.9

2015

6.9

2019

7.3

5.8

2020

8.4

1998

7.2

1999

7.3

2008

3.6

2017

7.1

2019

7.5

2012

7.1

2010

7.8

2002

7.9

2019

6.9