2016

4.7

1987

6.5

1982

6.7

2000

8.2

1963

4.0

1998

7.1

1993

6.0

2003

6.8

1982

5.2

2001

6.2

1988

6.6

2005

5.5

2006

5.4

1997

7.0

1999

6.1

1996

6.2

1972

7.4

2003

5.0

2001

6.0

1997

6.7