1997

6.5

1998

4.0

1970

0.0

2001

7.2

1991

10.0

1993

3.5

2010

4.2

1987

5.0

2020

5.5

1994

6.3

2007

8.2

2001

5.2

1996

5.7

2003

8.4

2014

4.9

1997

0.0

1993

3.2

1992

6.2

1971

6.1

2003

6.2

1990

4.5