1995

7.6

1994

7.5

2002

7.5

1999

7.7

1984

7.4

2010

10.0

1979

6.7

1999

7.6

2001

8.1

1987

7.3

1999

7.1

1993

7.7

1983

5.2

1986

4.0

1972

6.3

2020

0.0

2017

9.0

2016

7.5

2013

7.5

2013

0.0