2003

8.2

1987

7.1

1999

6.8

1984

6.2

1993

5.6

1985

7.7

2019

0.0

2001

3.2

2002

3.5

1999

2.9

2001

6.4

2007

6.9

1992

7.4

1999

7.1

2002

6.0

2014

4.7

1975

4.0

2001

5.9

1970

4.4

2017

4.7