2015

6.7

2002

7.7

1994

7.8

1995

5.2

1987

4.0

2003

7.3

1996

6.7

1997

0.0

1994

7.0

1999

3.5

1993

3.7

2001

7.1

1996

5.0

1990

7.9

1999

6.0

2019

5.4