1998

7.1

2008

8.9

2025

6.4

2001

7.8

2015

8.0

2009

8.4

2001

7.6

2001

7.6

2021

7.0

2010

6.7

2019

8.1

1989

8.0

2010

8.0

1984

7.3

2005

7.7

1982

7.6

1980

8.3

2012

7.9

1964

8.0

1979

7.5