1965

7.0

1989

5.1

2000

7.2

1970

6.3

1973

7.3

2001

6.4

1987

7.5

2015

4.6

2002

7.5

2016

5.9

2004

7.8

1999

6.3

2021

9.2

1991

8.3

2015

7.3

1982

7.8

2007

6.7

2025

0.0

2009

6.7

2008

6.8