1995

6.8

2007

5.7

2011

0.0

2002

5.3

2011

6.7

1992

7.1

2017

6.4

2009

7.0

1991

6.6

1997

7.5

1990

5.8

1984

4.8

1993

8.0

2002

7.7

2017

7.9

2015

6.1

1997

7.2

2018

6.9

1977

7.5

1987

6.3

2015

6.6

1982

0.0

1988

6.7

1972

5.8

2011

7.4

2001

7.2