1987

7.1

1999

4.0

1995

6.1

2010

7.8

2001

7.2

2000

7.6

2002

7.7

1995

5.4

2000

5.2

1978

5.6

1990

7.4

2001

7.6

1999

7.9

1993

7.0

2005

6.7

1984

7.5

1986

6.1

2011

8.1

2001

7.6

1988

6.4

2020

0.0

2001

4.9

1985

7.2

1985

6.0

1999

8.7

1989

7.5