2003

7.8

1997

7.1

1972

7.1

2001

7.4

1997

7.5

1990

6.2

2006

7.0

1995

7.3

2004

6.6

1983

7.2

1988

7.7

2014

7.1

2021

6.1

2007

5.8

2003

6.4

1988

6.5

2014

5.7

1993

6.0

2004

6.3

1986

6.5