1990

7.5

1992

6.8

2004

7.3

2007

6.3

1999

7.6

1987

6.5

1989

7.0

1992

6.7

1998

6.6

2006

6.7

2024

5.7

2017

7.2

1993

6.6

2019

6.8

1994

5.6

2000

4.8

1990

6.5

2008

4.6

1973

7.7

1995

5.9