Display child page content on parent page?

I currently have child pages titled by year. Each child page contains an ACF repeater with text/image content.

All Artwork (parent page)

• 2017 (child page)
• 2016 (child page)
• 2015 (child page) ... etc.

I'd like to have a parent page display specific content from all of its child pages in descending order. Is that possible?

I know how to call the child pages individually using their page id. But if I did that, the parent page wouldn't automatically call in new content if a new child page was added.

Any pointers you can provide would be of great help. Thank you!

Right now I have this, which works for the post_title, but I'm just not figuring out how to implement it for the ACF repeater content:

<?php $childArgs = array( 'sort_order' => 'ASC', 'sort_column' => 'menu_order', 'child_of' => get_the_ID() ); $childList = get_pages($childArgs); foreach ($childList as $child) { ?> <div class="child-page"> <h2 class="child-title"><?php echo $child->post_title; ?></h2> <?php if( have_rows('a-gallery') ): ?>

        <div class="grand-works">

        <?php while( have_rows('a-gallery') ): the_row(); 

        // vars
        $image = get_sub_field('a-image');
        $thumbssize = get_sub_field('a-size-thumbs'); 

        ?>

            <?php if( $image ): ?>

                    <img src="<?php echo $image ?>" class="thumbs-work grow <?php echo $thumbssize ?>">

            <?php endif; ?>

        <?php endwhile; ?>

        </div>

    <?php endif; ?>
            <?php echo apply_filters( 'the_content', $child->post_content); ?>
        </div>
    <?php } ?>