2000

8.0

2008

6.9

1966

8.5

1991

8.3

1972

8.7

2005

7.0

1990

6.1

2006

6.6

1998

7.8

2022

7.4

1989

7.8

2018

8.2

1990

7.4

1971

7.5

1967

5.3

1995

6.5

2012

7.4

1997

5.6

1983

6.3

2015

6.1