2000

6.3

2004

6.6

1987

7.5

2005

6.4

1998

6.4

2005

6.8

2003

5.7

2003

6.2

2003

8.8

2007

6.7

1994

6.5

2022

7.8

1988

6.5

1989

5.4

2009

6.1

1992

6.2

2012

5.9

2002

5.3

2014

6.0