1990

7.6

2006

5.7

2014

6.2

2016

6.8

2011

6.0

2011

7.5

2006

7.7

1985

7.5

1991

8.1

2004

8.0

2015

6.9

2024

9.0

1995

7.2

2015

7.4

1999

7.0

2018

7.1

1975

7.4

1972

7.5

2020

7.3

1994

7.3