1972

7.1

2001

6.2

1992

6.7

2001

6.7

2003

7.4

2002

6.6

1955

7.5

1999

7.4

1999

7.4

2014

3.5

2018

0.0

2004

6.4

2005

7.0

1992

5.8

1996

6.4

1994

4.5

1988

8.0

2017

6.1

2013

5.2

2001

0.0