2001

6.9

1982

5.8

1964

6.4

1974

9.3

2017

6.1

1999

6.9

2015

7.5

2007

7.0

2013

7.5

1994

8.7

2010

7.4

2003

5.6

2008

7.6

2013

5.9

2017

7.6

1999

8.5

2002

7.3

2018

6.8

1975

7.7

2017

7.3