2017

6.3

2019

6.8

1968

6.2

2002

6.0

2004

5.5

2006

5.3

2017

6.7

1985

4.1

2020

4.4

1988

7.4

2006

6.2

2005

5.1

1993

3.5

1987

4.5

1985

7.4

2016

5.9

2012

6.8

2012

6.4

1999

7.3

2019

5.8