1992

7.5

2015

7.6

2000

8.1

2019

6.6

2008

6.7

2020

7.0

1984

6.7

2004

7.6

1989

6.5

1995

6.0

1992

0.0

1982

7.7

1979

6.2

2002

5.8

2015

5.8

2022

6.6

2007

6.5

1982

5.5