1979

0.0

1990

7.4

1994

7.0

2014

2.0

0.0

1992

0.0

1987

3.0

1998

8.0

2000

6.8

1991

6.5

1993

5.7

2023

6.7

2022

7.0

2002

6.9

2001

4.6

1993

6.3

2004

4.4

2017

6.5

2001

2.0

1994

6.5

2007

5.6

1985

5.2

2010

3.9

1984

6.3

1989

8.0

1989

7.5

1997

4.5

1981

6.6

2001

0.0

1996

2.0