1980

5.7

2010

6.6

1989

6.0

1995

5.8

1993

6.3

2011

6.9

1990

6.5

2019

7.0

2009

7.7

2005

6.0

1993

4.9

2008

7.1

2024

7.6

2007

6.6

2021

5.9

2013

7.9

1991

5.9

2024

5.7

2024

7.0

2021

6.3