2017

5.7

1967

7.6

1988

6.3

1985

6.5

2008

6.1

2000

5.1

1986

6.7

1994

5.7

1995

7.3

2016

5.5

1968

7.6

1989

6.1

1993

6.0

2004

5.3

1999

6.1

1985

7.5

1984

6.4

2006

5.9

2002

6.2

2008

4.5