2008

5.7

1996

6.5

1998

6.1

2005

7.5

2014

4.9

1989

7.0

2003

6.3

2015

5.7

2008

5.8

2009

5.8

2005

6.6

2018

4.7

1979

7.7

1981

7.2

1988

4.4

1998

5.6

1997

6.5

1998

8.2

2001

6.2

2002

7.1