2004

6.0

1998

7.1

2001

6.3

1998

6.8

2006

5.4

2017

5.2

2017

6.2

1994

6.4

1999

5.5

2019

5.8

2006

6.3

1966

6.7

2005

6.2

1971

7.1

2005

5.6

2002

6.7

2007

5.9

1985

6.6

1951

7.4

2018

6.5