5.3

1993

6.2

1990

6.6

2018

5.9

2017

3.8

2000

6.4

5.6

2020

7.0

2007

7.7

2024

7.3

2009

6.2

2005

6.0

1989

5.7

1999

7.6

2011

6.1

2017

6.4

7.0

2010

9.0

2020

9.4

2011

7.5