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:
Holly's World
Table title:
Season 1 (2010)
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > No. in series </th><th colspan=1 rowspan=1 > No. in season </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > U.S. viewers (million) </th><th colspan=1 rowspan=1 > Original air date </th></tr>
<tr> <th colspan=1 rowspan=1 > 1 </th><td colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > "Opening a Cancun of Worms" </td><td colspan=1 rowspan=1 > 1.897 </td><td colspan=1 rowspan=1 > June 13, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 3 </th><td colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > "Better Date Than Never" </td><td colspan=1 rowspan=1 > 1.742 </td><td colspan=1 rowspan=1 > June 20, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 4 </th><td colspan=1 rowspan=1 > 3 </td><td colspan=1 rowspan=1 > "A Housewarming Divided" </td><td colspan=1 rowspan=1 > 1.601 </td><td colspan=1 rowspan=1 > June 27, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 5 </th><td colspan=1 rowspan=1 > 4 </td><td colspan=1 rowspan=1 > "It Takes Balls" </td><td colspan=1 rowspan=1 > 1.577 </td><td colspan=1 rowspan=1 > July 5, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 6 </th><td colspan=1 rowspan=1 > 5 </td><td colspan=1 rowspan=1 > "Road Trippin'" </td><td class="highlighted"  colspan=1 rowspan=1 > 1.557 </td><td colspan=1 rowspan=1 > July 11, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 7 </th><td colspan=1 rowspan=1 > 6 </td><td colspan=1 rowspan=1 > "Breast Intentions" </td><td class="highlighted"  colspan=1 rowspan=1 > 1.625 </td><td colspan=1 rowspan=1 > July 18, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 8 </th><td colspan=1 rowspan=1 > 7 </td><td colspan=1 rowspan=1 > "Operation Angel" </td><td class="highlighted"  colspan=1 rowspan=1 > 1.744 </td><td colspan=1 rowspan=1 > July 25, 2010 </td></tr>
<tr> <th colspan=1 rowspan=1 > 9 </th><td colspan=1 rowspan=1 > 8 </td><td colspan=1 rowspan=1 > "Careful What You Wish For" </td><td class="highlighted"  colspan=1 rowspan=1 > 2.224 </td><td colspan=1 rowspan=1 > August 1, 2010 </td></tr>
</table>
Question:
How did US viewer counts change in the second half of Holly's World Season 1?
Answer:
Ratings continued to improve for the rest of the season, reaching an all-time high with 2.224 million viewers watching the season finale.