1990

6.3

1986

6.0

1976

6.8

1974

6.3

1998

4.9

2009

6.6

2005

7.7

1988

7.2

2021

7.1

2002

7.0

2020

7.4

2012

6.8

1989

7.4

2022

7.7

1994

8.7

1972

8.7

2010

8.4

2019

8.1

1999

8.4

1980

8.2