2000

7.1

1972

6.2

2001

6.9

2002

6.1

2013

8.2

1977

7.4

2006

5.1

2007

6.9

2001

6.8

2018

7.6

2003

6.6

1995

7.3

1988

5.8

1969

1.0

2017

6.0

1998

0.0

1991

6.0

1970

7.2

1996

6.7

1995

7.3