1993

6.5

2006

6.1

1988

6.5

2019

6.7

1993

6.7

1999

6.8

1995

4.6

2008

5.8

2020

6.5

2006

6.8

1966

6.2

1996

7.1

1980

6.4

1958

5.5

2001

6.8

1999

5.9

1980

5.9

2014

6.3

2003

6.8

1987

5.3