Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Javier Culson
Table title:
Honours
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 2003 </td><td colspan=1 rowspan=1 > Pan American Junior Athletics Championships </td><td colspan=1 rowspan=1 > Bridgetown, Barbados </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=16 > 400 metres hurdles </td><td colspan=1 rowspan=1 > 51.10 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2004 </td><td colspan=1 rowspan=1 > Ibero-American Championships </td><td colspan=1 rowspan=1 > Huelva, Spain </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > 53.66 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > Ibero-American Championships </td><td colspan=1 rowspan=1 > Ponce, Puerto Rico </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 49.71 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2007 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Osaka, Japan </td><td colspan=1 rowspan=1 > 19th </td><td colspan=1 rowspan=1 > 49.64 </td></tr>
<tr> <td colspan=1 rowspan=1 > Pan American Games </td><td colspan=1 rowspan=1 > Rio de Janeiro, Brazil </td><td colspan=1 rowspan=1 > 6th </td><td colspan=1 rowspan=1 > 49.46 </td></tr>
<tr> <td colspan=1 rowspan=1 > NACAC Championships </td><td colspan=1 rowspan=1 > San Salvador, El Salvador </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 49.31 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2008 </td><td colspan=1 rowspan=1 > XXIX Olympic Games </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 8th </td><td colspan=1 rowspan=1 > 49.85 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2009 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Berlin, Germany </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 48.09 </td></tr>
<tr> <td colspan=1 rowspan=1 > Central American and Caribbean Championships in Athletics </td><td colspan=1 rowspan=1 > Havana, Cuba </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 48.51 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2010 </td><td colspan=1 rowspan=1 > Continental Cup </td><td colspan=1 rowspan=1 > Split, Croatia </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 48.08 </td></tr>
<tr> <td colspan=1 rowspan=1 > Central American and Caribbean Games </td><td colspan=1 rowspan=2 > Mayagüez, Puerto Rico </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 48.58 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2011 </td><td colspan=1 rowspan=1 > Central American and Caribbean Championships in Athletics </td><td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > 50.27 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > World Championships </td><td class="highlighted"  colspan=1 rowspan=1 > Daegu, South Korea </td><td class="highlighted"  colspan=1 rowspan=1 > 2nd </td><td class="highlighted"  colspan=1 rowspan=1 > 48.44 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2012 </td><td colspan=1 rowspan=1 > XXX Olympic Games </td><td colspan=1 rowspan=1 > London, England </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 48.10 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2013 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Moscow, Russia </td><td colspan=1 rowspan=1 > 6th </td><td colspan=1 rowspan=1 > 48.38 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2014 </td><td colspan=1 rowspan=2 > Continental Cup </td><td colspan=1 rowspan=2 > Marrakech, Morocco </td><td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 48.88 </td></tr>
<tr> <td colspan=1 rowspan=1 > 3rd </td><td colspan=1 rowspan=1 > 4 × 400 metres relay </td><td colspan=1 rowspan=1 > 3:02.78 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2015 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 18th </td><td colspan=1 rowspan=5 > 400 metres hurdles </td><td colspan=1 rowspan=1 > 49.36 </td></tr>
<tr> <td colspan=1 rowspan=1 > Pan American Games </td><td colspan=1 rowspan=1 > Toronto, Canada </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 48.67 </td></tr>
<tr> <td colspan=1 rowspan=1 > NACAC Championships </td><td colspan=1 rowspan=1 > San José, Costa Rica </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 48.70 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Rio de Janeiro, Brazil </td><td colspan=1 rowspan=1 > 4th (sf) </td><td colspan=1 rowspan=1 > 48.461 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2017 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > 27th (h) </td><td colspan=1 rowspan=1 > 50.33 </td></tr>
</table>
Question:
in what year did Culson Perez earned a silver medal?
Answer:
In 2011, Culson Pérez earned silver medal when he clocked 48.44 seconds at the World Championships in Daegu, South Korea.