2017

7.3

2006

7.4

1986

6.1

2006

6.5

2003

6.0

2001

5.4

1987

5.7

1993

7.1

2020

7.5

2021

8.0

1997

6.6

1999

6.3

2002

6.0

1988

7.0

2007

6.9

2006

6.7

1995

5.9

2006

6.3

2015

7.5

1998

6.3