1994

6.2

2000

3.8

1974

7.1

2021

6.4

2005

5.9

1964

6.6

1958

6.0

2000

6.8

2002

5.4

1996

6.0

1996

6.5

1984

5.6

1991

6.3

2007

6.2

2018

4.9

2013

5.4

1996

6.0

1986

6.7

2006

7.2

1952

6.7