Official World Golf Ranking Breakdown by nationality Breakdown by nationality

| Country | _2012 | _2011 | _2010 | _2009 | _2008 | _2007 | _2006 | _2005 | _2004 | _2003 | _2002 | _2001 | _2000 | _1999 | _1998 | _1997 | _1996 | _1995 | _1994 | _1993 | _1992 | _1991 | _1990 | _1989 | _1988 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Italy | 2 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Germany | 2 | 1 | 1 | 1 | 1 | 2 | 0 | 1 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Ireland | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 3 | 1 | 1 | 2 | 3 | 1 | 0 | 0 | 1 | 1 | 3 | 2 | 2 |
| Thailand | 2 | 0 | 1 | 2 | 2 | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |