As Easy as Riding a Bike

6.7

/

2006

7.593

/

2000

6.3

/

2000

6.3

/

2004

7.1

/

2002

7.345

/

2004

7.337

/

2014

7.2

/

1984

5.7

/

2008

7.474

/

2005

5.1

/

2004

5.6

/

2008

6

/

2001

7.7

/

1956

6.478

/

2008

5.9

/

1989

7

/

1976

7.341

/

2003

7.4

/

1994

6.4

/

2008