1998

7.9

1996

7.5

1992

7.5

1991

7.8

2001

6.0

2011

2.0

2018

6.8

1984

7.4

2016

6.8

1978

7.0

2009

7.9

1982

4.7

1999

5.5

1997

6.4

2002

6.5

1998

7.1

2003

6.5

2019

10.0

2007

6.7

1997

6.5