2002

6.3

1951

7.2

2018

6.7

2004

5.7

1998

6.0

1999

6.6

1999

6.2

1990

6.1

5.4

2017

4.5

2002

5.2

2008

5.2

2009

6.0

1988

7.2

1989

6.7

2009

5.6

2001

6.7

2004

7.3

1976

7.5

2003

5.5