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:
| Period | Internet Explorer | Firefox | Safari | Opera | Netscape | Other Mozilla |
| --- | --- | --- | --- | --- | --- | --- |
| 2011 Q2 | 54.36% | 21.67% | 7.30% | 1.97% | 0.79% | 0.03% |
| 2011 Q1 | 56.19% | 22.11% | 6.43% | 2.20% | 0.75% | 0.03% |
| 2010 Q4 | 58.27% | 22.80% | 5.59% | 2.24% | 0.67% | 0.03% |
| 2010 Q3 | 60.29% | 22.93% | 5.17% | 2.40% | 0.52% | 0.02% |
| 2010 Q2 | 60.01% | 24.24% | 4.78% | 2.33% | 0.49% | 0.12% |
| 2010 Q1 | 61.43% | 24.40% | 4.55% | 2.37% | 0.52% | 0.15% |
| 2009 Q4 | 63.67% | 24.46% | 4.41% | 2.29% | 0.32% | 0.11% |
| 2009 Q3 | 66.80% | 23.06% | 4.13% | 2.07% | 0.50% | 0.09% |
| 2009 Q2 | 68.06% | 23.00% | 3.67% | 2.05% | 0.68% | 0.06% |
| 2009 Q1 | 69.13% | 22.67% | 3.58% | 2.18% | 0.51% | 0.06% |
| 2008 Q4 | 71.99% | 20.78% | 3.11% | 2.15% | 0.41% | 0.07% |
| 2008 Q3 | 74.93% | 19.07% | 2.73% | 2.06% | 0.43% | 0.07% |
| 2008 Q2 | 76.24% | 18.16% | 2.73% | 1.97% | 0.48% | 0.08% |
| 2008 Q1 | 77.83% | 16.86% | 2.65% | 1.84% | 0.41% | 0.13% |
| *2007 Q4 | *79.16% | *15.84% | *2.39% | *1.78% | *0.50% | *0.09% |
| *2007 Q3 | *78.85% | *14.69% | *4.80% | *0.51% | *0.76% | *0.11% |
| *2007 Q2 | *78.76% | *14.92% | *4.66% | *0.46% | *0.83% | *0.15% |
| *2007 Q1 | *79.38% | *14.35% | *4.70% | *0.50% | *0.77% | *0.19% |
| *2006 Q4 | *80.69% | *13.50% | *4.06% | *0.56% | *0.86% | *0.23% |
| *2006 Q3 | *82.88% | *11.89% | *3.30% | *0.62% | *0.88% | *0.26% |
| *2006 Q2 | *84.03% | *10.67% | *3.25% | *0.57% | *0.98% | *0.32% |
| *2006 Q1 | *85.01% | *9.77% | *3.10% | *0.53% | *1.09% | *0.36% |
| *2005 Q4 | *85.88% | *9.00% | *2.80% | *0.54% | *1.25% | *0.43% |
| *2005 Q3 | *86.74% | *7.97% | *2.24% | *0.55% | *1.92% | *0.48% |
| *2005 Q2 | *87.24% | *8.08% | *1.89% | *0.52% | *1.62% | *0.59% |
| *2005 Q1 | *89.02% | *6.17% | *1.70% | *0.49% | *1.89% | *0.67% |
| *2004 Q4 | *91.35% | *3.66% | *1.50% | *0.51% | *2.09% | *0.80% |
| Period | Internet Explorer | Firefox | Safari | Opera | Netscape | Other Mozilla |
Question:
What percentage of users were using Opera during the period in which 63.67% were using Internet Explorer?
Answer:
2.29%