1989

5.1

1969

6.6

2016

5.9

1985

6.4

1994

5.9

1999

6.3

2006

6.6

2009

7.4

1964

7.0

1987

7.2

2004

7.8

1964

7.4

2012

6.0

2011

6.4

2007

6.5

2019

7.7

1989

6.0

1981

6.5

2001

6.4