countries visited
| United States: 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 2006 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 |
| Soviet Union: 1989 1991 |
| Finland: 1992 1994 1995 1996 2003 |
| Russia: 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2015 2016 |
| Ukraine: 1992 2004 |
| Ireland: 1993 |
| The Bahamas: 1995 |
| France: 1995 1996 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 |
| Switzerland: 1995 1996 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 |
| Dominican Republic: 1996 |
| Canada: 1997 |
| Yugoslavia: 1998 |
| Turkey: 1999 |
| Spain: 2000 |
| Andorra: 2000 |
| Germany: 2001 2003 2008 2010 |
| Italy: 2001 2003 |
| Vatican City: 2001 |
| San Marino: 2001 |
| Austria: 2001 |
| Tunisia: 2002 |
| Liechtenstein: 2003 |
| United Kingdom: 2004 2006 |
| Czech Republic: 2008 |
| Poland: 2008 |
| Lithuania: 2008 |
| Latvia: 2008 |
| Israel: 2012 |
| Canada: 2014 2016 |
|