2001

5.9

2002

5.4

2014

6.2

2003

7.2

1990

7.3

2011

1.0

2017

6.4

1997

5.1

1996

5.7

1998

5.7

2002

5.4

1995

5.1

1987

5.6

2000

6.6

2007

6.2

2006

5.9

2004

5.6

2014

5.4

2014

6.3

2014

6.0