1974

6.0

2014

6.3

1977

4.6

1996

1.8

2008

3.8

1972

4.1

2000

7.1

2007

6.5

1973

4.7

2005

5.5

2004

6.4

2016

5.1

2006

5.2

1973

4.9

2007

4.8

1999

3.0

2017

4.0

1984

4.8

2009

4.8

2009

5.6