2019

6.3

1997

7.6

2002

6.3

2000

7.4

2017

6.7

1991

5.6

1992

4.9

1999

5.4

2010

4.5

2008

6.8

2004

3.8

2009

3.5

1998

5.9

2011

3.4

2011

4.8

2018

5.8

2012

6.3

2024

6.0

1977

4.1

2015

4.5