1998

7.3

1989

7.2

2004

0.0

2019

7.6

1989

0.0

1994

6.9

2005

4.5

2020

1.0

1990

6.0

1992

4.2

1991

6.4

1993

7.0

1987

6.0

1982

5.6

1978

5.2

1998

7.3