2004

5.6

2007

6.9

2003

6.2

1986

3.0

1995

6.5

2009

7.5

2002

5.3

2015

3.0

2000

5.8

1976

5.6

1964

5.8

2017

4.0

2004

3.1

1992

5.0

2003

4.5

2006

1.0

2018

5.8

2009

4.7

1974

3.9

2004

3.8