1994

6.3

2005

6.1

2007

5.6

2009

5.4

1965

7.9

1956

7.1

1986

7.1

2003

6.4

1973

5.1

1944

6.3

2006

7.5

2003

5.9

1991

4.7

2012

7.8

2015

7.1

2019

9.8

1998

5.6

2014

7.6

2000

7.3

1996

6.9