1984

1.0

1986

5.5

1987

6.9

2002

6.8

2005

6.3

1992

5.9

1999

6.4

2007

5.4

2017

1.0

2021

10.0

2014

5.2

1997

6.0

2004

2.0

1998

6.3

1984

4.0

2006

5.9

2009

6.6

1969

2.3

1994

4.1

2009

5.6