2018

6.0

2013

8.3

2001

8.9

1984

7.1

2013

8.0

2011

7.1

1987

7.1

1991

5.6

1990

6.4

1979

7.6

2017

6.9

1995

6.8

2020

6.3

2000

9.4

1971

5.8

1996

5.6

1978

6.9

2020

6.1

2004

5.9

2015

5.0