2018

7.1

2016

5.6

2004

4.9

1978

5.8

1964

7.0

2009

8.0

1982

5.9

2007

5.4

2004

4.9

1965

4.4

2020

6.0

2000

6.8

2006

7.2

1952

6.7

1987

6.9

2000

3.8

1974

7.1

1986

6.9

1986

6.1

2007

6.2