1992

4.2

1969

4.7

2001

7.2

2003

5.0

2018

5.1

1965

5.3

1997

3.5

2008

5.5

2007

8.2

1975

6.0

1973

5.1

1991

5.8

2003

5.4

1999

5.4

1993

6.5

2020

6.1

2006

4.8

1966

6.8

2003

6.2