1970
1 trip
1972
2 trips
1973
2 trips
1974
2 trips
1975
1 trip
1976
1 trip
1977
2 trips
1980
1 trip
1981
1 trip
1982
1 trip
1984
2 trips
1985
4 trips
1986
2 trips
1988
3 trips
1989
2 trips
1990
1 trip
1991
4 trips
1993
1 trip
1995
2 trips
1996
2 trips
1998
2 trips
1999
4 trips
2000
2 trips
2001
1 trip
2003
1 trip
2004
2 trips
2005
3 trips
2006
2 trips
2007
4 trips
2008
2 trips
2009
2 trips
2010
3 trips
2011
5 trips
2012
3 trips
2013
2 trips
2014
3 trips
2015
2 trips
2016
5 trips
2017
3 trips
2018
5 trips
2019
4 trips
2020
1 trip
2021
5 trips