1987

8.1

1979

8.3

1986

7.7

1987

7.3

1987

8.6

1978

8.0

1984

5.9

2021

4.7

2020

7.3

1985

4.8

2005

6.7

1987

6.6

2022

7.6

1991

5.6

2008

5.0

1989

6.5

2005

6.2

1985

5.8

2002

6.5

2002

7.1