2004

3.7

1982

6.9

1994

5.0

1999

5.3

1993

7.7

2008

6.5

2018

0.0

1986

7.1

2005

5.2

1990

7.4

1987

6.6

2000

5.5

1992

4.8

1993

6.2

1997

7.7

1990

6.9

2016

8.0