1998

6.2

1992

3.7

1969

4.7

2001

7.1

2003

4.8

2018

5.1

1965

5.3

1997

3.5

2008

5.5

2007

8.1

1975

6.0

1973

5.1

1991

5.8

2003

5.4

1999

5.4

1993

5.4

2020

6.1

2006

4.7

1966

7.0

2003

6.2