1992

8.2

1992

6.8

1990

6.9

2021

5.9

2001

8.4

1998

5.0

1978

6.2

2014

6.5

2018

5.7

1989

8.3

1983

7.3

2009

6.3

7.5

2018

6.0

1972

8.0

2016

5.0

1984

8.0

2020

7.9

1990

7.1