1996

8.1

1978

7.3

1971

6.4

1989

7.9

2000

8.2

2006

8.1

2023

0.0

2006

8.0

2013

4.6

2005

7.9

2006

7.0

2015

8.0

1972

8.1

1993

7.8

1994

9.2

1984

7.7

1980

8.0

1981

8.3

2002

8.9

2019

7.2