1953

6.0

2002

4.6

1980

6.7

1998

6.1

1980

6.3

2003

6.5

1984

7.1

1983

5.5

1986

7.0

1990

6.4

1993

6.5

1997

5.6

2016

6.1

2001

0.0

2007

0.0

1996

5.5

1995

5.9

1998

4.4

1994

6.7

2005

6.3