1990

6.9

2021

8.4

2019

8.0

2010

7.8

1992

6.8

2006

6.8

1999

7.1

2017

8.2

1996

5.4

2004

8.6

1992

8.5

1973

6.8

1998

6.8

2005

7.0

2017

6.5

1992

5.8

2019

6.9

2017

7.6

1982

7.7

2016

7.3