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:
Los Angeles Open
Table title:
Tournament sites
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Times hosted </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Years </th></tr>
<tr> <td colspan=1 rowspan=1 > 56 </td><td colspan=1 rowspan=1 > Riviera Country Club </td><td colspan=1 rowspan=1 > Pacific Palisades </td><td colspan=1 rowspan=1 > 1929–30, 1941, 1945–53, 1973–82, 1984–97, 1999–2018 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Valencia Country Club </td><td colspan=1 rowspan=1 > Valencia </td><td colspan=1 rowspan=1 > 1998 </td></tr>
<tr> <td colspan=1 rowspan=1 > 17 </td><td class="highlighted"  colspan=1 rowspan=1 > Rancho Park Golf Course </td><td class="highlighted"  colspan=1 rowspan=1 > Los Angeles </td><td class="highlighted"  colspan=1 rowspan=1 > 1956–67, 1969–72, 1983 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td class="highlighted"  colspan=1 rowspan=1 > Brookside Golf Course </td><td class="highlighted"  colspan=1 rowspan=1 > Pasadena </td><td class="highlighted"  colspan=1 rowspan=1 > 1968 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Inglewood Country Club </td><td colspan=1 rowspan=1 > Inglewood </td><td colspan=1 rowspan=1 > 1955 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Fox Hills Country Club </td><td colspan=1 rowspan=1 > Culver City </td><td colspan=1 rowspan=1 > 1954 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > Wilshire Country Club </td><td colspan=1 rowspan=1 > Los Angeles </td><td colspan=1 rowspan=1 > 1928, 1931, 1933, 1944 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Hillcrest Country Club </td><td colspan=1 rowspan=1 > Los Angeles </td><td colspan=1 rowspan=1 > 1932, 1942 </td></tr>
<tr> <td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > Los Angeles Country Club </td><td colspan=1 rowspan=1 > Los Angeles </td><td colspan=1 rowspan=1 > 1926, 1934–36, 1940 </td></tr>
<tr> <td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > Griffith Park (Wilson course)^ </td><td colspan=1 rowspan=1 > Los Angeles </td><td colspan=1 rowspan=1 > 1937–39 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > El Caballero Country Club </td><td colspan=1 rowspan=1 > Tarzana </td><td colspan=1 rowspan=1 > 1927 </td></tr>
</table>
Question:
When was the Los Angeles Open held at Rancho Park Golf Course?
Answer:
From 1956–72, the Los Angeles Open was held in Los Angeles at Rancho Park Golf Course, with the exception in 1968, where it was held at Brookside Golf Course in Pasadena.