2004

6.6

1993

6.5

1984

7.2

2000

6.3

1998

7.0

1998

6.5

2001

6.9

2009

2.2

2020

6.7

2000

7.7

2022

7.9

1981

7.1

2007

6.1

1990

6.2

2008

6.6

2003

5.3

2004

6.4

2013

6.0

2003

7.2

2014

5.8