2001

7.8

1996

4.7

1994

6.7

2010

1.0

1993

8.4

1998

7.3

1999

4.8

2018

6.1

1993

7.0

2013

7.7

1990

7.2

1997

5.7

2000

7.1

2001

6.6

1984

7.0

2009

7.6

2003

7.0

2008

7.6