The files (parts and assembllies) are much bigger after I  updated form Solidworks 2013 to Solidworks 2014.For example, one patr becames 33M ,but it used to be 11M when its formats was Solidworks 2013.

      How I can changes the settings to make the files not  so big?

英文不好，下面用中文描述一下吧

     用了Solidworks 2014 以后，感觉文件变大了很多。原来11m的文件现在变成了33m。装配体文件就比以前更大了。这是怎么回事？能设置一下，使文件不变这么大吗？文件太大了对读取速度影响很大。