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 | Cost (Millions) | Average Cost Per Gallon | Percentage of     Operating Expenses |
| --- | --- | --- | --- |
| 2003 | $920 | $0.80 | 16.5% |
| 2004 | $1,106 | $0.92 | 18.1% |
| 2005 | $1,470 | $1.13 | 21.4% |
| 2006 | $2,284 | $1.64 | 28.0% |
| 2007 | $2,690 | $1.80 | 29.7% |
| 2008 | $3,713 | $2.44 | 35.1% |
| 2009 | $3,044 | $2.12 | 30.2% |
| 2010 | $3,620 | $2.51 | 32.6% |
| 2011 | $5,644 | $3.19 | 37.7% |
| 2012 | $6,120 | $3.30 | 37.2% |
| 2013 | $5,763 | $3.16 | 35.1% |
| 2014 | $5,293 | $2.93 | 32.3% |
| 2015 | $3,616 | $1.90 | 23.0% |
| 2016 | $3,647 | $1.82 | 21.9% |
| 2017 | $3,940 | $1.92 | 22.3% |
| First Quarter 2017 | $922 | $1.89 | 21.8% |
| Second Quarter 2017 | $990 | $1.84 | 22.0% |
| Third Quarter 2017 | $1,003 | $1.92 | 22.6% |
| Fourth Quarter 2017 | $1,025 | $2.04 | 22.8% |
Question:
In 2010, what percentage of operating expenses of Southwest was spent on fuel?
Answer:
32.6%