2002

6.2

2000

7.4

1992

5.0

2014

5.2

2008

6.8

2010

4.5

1980

6.6

2009

2.7

1984

5.7

1972

5.9

2004

5.4

1999

5.1

1989

6.0

2004

3.5

1991

5.5

2018

5.7

2012

6.3

1998

5.8

2019

5.8

1966

4.3