1985

6.7

1998

7.3

2009

7.8

2008

6.5

1999

6.1

1984

2.0

2000

6.4

1998

7.0

2003

5.9

2016

5.0

1997

6.3

2009

8.3

1969

7.1

2015

6.0

2024

0.0

2018

0.0

2001

5.9

2010

7.0

2009

6.0

1998

7.4