2020

7.6

1990

6.3

1975

4.5

1990

4.4

1997

6.0

2021

6.2

2014

9.8

2003

8.7

2013

6.1

2010

6.6

2000

6.4

2001

5.9

2011

7.3

1989

9.3

2003

6.2

2013

8.1

1993

5.0

2015

6.4