1995

7.8

1988

8.1

2010

8.5

2004

7.2

2010

6.7

2024

8.5

2019

8.0

2000

8.0

1999

7.9

1984

6.9

2003

7.8

1984

7.4

1979

6.8

2019

8.2

2004

7.9

2021

7.8

1997

7.2

2015

6.9

1993

7.1

1973

6.8