<data>
<row _id="1"><Survey year>2010</Survey year><Very easy>0.13</Very easy><Quite easy>0.24</Quite easy><Neither easy nor difficult>0.39</Neither easy nor difficult><Quite difficult>0.19</Quite difficult><Very difficult>0.05</Very difficult></row>
<row _id="2"><Survey year>2014</Survey year><Very easy>0.11</Very easy><Quite easy>0.23</Quite easy><Neither easy nor difficult>0.4</Neither easy nor difficult><Quite difficult>0.2</Quite difficult><Very difficult>0.06</Very difficult></row>
<row _id="3"><Survey year>2017</Survey year><Very easy>0.16</Very easy><Quite easy>0.25</Quite easy><Neither easy nor difficult>0.4</Neither easy nor difficult><Quite difficult>0.15</Quite difficult><Very difficult>0.03</Very difficult></row>
<row _id="4"><Survey year>2022</Survey year><Very easy>0.17</Very easy><Quite easy>0.28</Quite easy><Neither easy nor difficult>0.31</Neither easy nor difficult><Quite difficult>0.17</Quite difficult><Very difficult>0.07</Very difficult></row>
<row _id="5"><Survey year>2023</Survey year><Very easy>0.11</Very easy><Quite easy>0.22</Quite easy><Neither easy nor difficult>0.36</Neither easy nor difficult><Quite difficult>0.23</Quite difficult><Very difficult>0.09</Very difficult></row>
<row _id="6"><Survey year>2024</Survey year><Very easy>0.1</Very easy><Quite easy>0.18</Quite easy><Neither easy nor difficult>0.38</Neither easy nor difficult><Quite difficult>0.27</Quite difficult><Very difficult>0.07</Very difficult></row>
</data>
