1994

6.0

1997

5.8

1998

7.3

2006

5.0

2021

6.4

1981

0.0

2013

6.4

1999

6.1

1994

6.5

2013

7.4

1987

8.4

2005

7.1

2000

7.0

2002

5.3

2005

0.0