2010

4.5

1997

7.6

2008

6.8

2000

7.4

2002

6.4

2024

6.0

1992

5.0

1999

5.4

2018

5.7

1991

5.8

2009

3.5

1989

6.0

2004

3.8

2011

5.3

1977

4.1

2012

6.3

1998

5.8

2011

3.4

2019

6.1

2015

4.6