Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Dates | Champion | Country | Score | To par | Margin of victory | Purse ( US$ ) | Winners share |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2012.0 | Jul 26–29 | Inbee Park | South Korea | 71-64-70-66=271 | –17 | 2 strokes | 3250000.0 | 487500.0 |
| 2011.0 | Jul 21–24 | Ai Miyazato | Japan | 68-68-67-70=273 | –15 | 2 strokes | 3250000.0 | 487500.0 |
| 2010.0 | Jul 22–25 | Jiyai Shin | South Korea | 68-70-71-66=274 | –14 | 1 stroke | 3250000.0 | 487500.0 |
| 2009.0 | Jul 23–26 | Ai Miyazato | Japan | 69-66-70-69=274 | –14 | Playoff | 3250000.0 | 487500.0 |
| 2008.0 | Jul 24–27 | Helen Alfredsson | Sweden | 72-63-71-67=273 | –15 | Playoff | 3250000.0 | 487500.0 |
| 2007.0 | Jul 26–29 | Natalie Gulbis | United States | 72-69-73-70=284 | –4 | Playoff | 3000000.0 | 450000.0 |
| 2006.0 | Jul 26–29 | Karrie Webb | Australia | 67-68-69-68=272 | –16 | 1 stroke | 3000000.0 | 450000.0 |
| 2005.0 | Jul 20–23 | Paula Creamer | United States | 68-68-66-71=273 | –15 | 8 strokes | 2500000.0 | 375000.0 |
| 2004.0 | Jul 21–24 | Wendy Doolan | Australia | 68-68-69-65=270 | –18 | 1 stroke | 2500000.0 | 375000.0 |
| 2003.0 | Jul 23–26 | Juli Inkster | United States | 66-72-64-65=267 | –21 | 6 strokes | 2100000.0 | 315000.0 |
| 2002.0 | Jun 12–15 | Annika Sörenstam | Sweden | 68-67-65-69=269 | –19 | 4 strokes | 2100000.0 | 315000.0 |
| 2001.0 | Jun 13–16 | Rachel Teske | Australia | 71-68-66-68=273 | –15 | 1 stroke | 2100000.0 | 315000.0 |
Question:
What countries have a margin of victory at 6 strokes?
Answer:
United States