1984

5.2

1988

5.9

2019

5.0

1995

4.7

2004

8.4

1994

6.2

2011

6.2

2001

7.6

2016

0.5

1991

5.4

2020

6.0

2001

7.4

2000

5.0

1993

6.8

2006

5.0

1998

4.2

2013

1.8

1995

6.5

1995

7.1

1993

8.3

1998

7.8

2006

6.3

1990

3.5

2003

8.7

2009

8.0