2006

5.6

1999

6.4

1985

7.1

1973

6.9

2006

5.3

2006

6.6

2003

6.3

1998

6.0

1988

6.8

2020

6.7

2002

7.2

2004

7.4

2018

4.3

2009

6.6

2019

5.7

1992

6.1

2002

5.0

2015

5.1

1978

6.1

2021

6.4