2017

6.5

2018

6.2

2021

8.1

1982

7.3

1962

7.2

2005

8.6

2001

8.6

2005

7.6

1989

7.8

1979

7.3

2006

8.1

1990

7.5

2005

6.2

1985

7.4

2010

7.8

1992

6.7

2006

8.6

1993

8.0

1998

7.0

1991

7.6