2009

5.9

2002

6.1

1995

7.3

1993

4.5

2005

5.1

1990

5.5

1997

6.4

2014

6.5

2005

6.4

1988

4.8

2014

4.7

2000

6.3

2001

6.7

1999

7.1

2001

7.8

1993

6.7

2015

6.9

2017

6.1

1997

5.2

2019

7.1