2007

7.2

2006

7.5

1977

7.7

1992

4.7

1992

7.2

2004

6.8

2006

6.2

2020

5.5

2015

7.6

2000

7.6

2003

6.5

1996

5.7

2022

6.9

2002

5.8

1977

7.0

1987

6.3

1994

6.8

2005

5.8

1981

7.1

2025

0.0