2016

6.7

2014

6.5

1964

7.0

1980

6.3

1968

6.9

1982

5.8

1993

6.1

1969

6.6

2009

6.2

1989

5.5

2007

4.8

2003

7.1

1999

7.3

2024

7.2

2017

6.3

2024

6.6

1972

6.2

1996

6.1

2017

6.0

2009

5.8