XF 2.2 In Style Template how to insert "2020-ThisYear".

[ShikiSuen]

I want to make sure the copyright text gets dynamically updated according to the current year settings on the server.
e.g.: on 2022 the 2021 gets automatically replaced with "2022".

My current code is here. How should I modify this?

<xf:if is="{{ property('themeBranding') }}">
    <div title="Previously for vBulletin 3.0 by (2004) 007pig & xgao">Theme for XF by (2020-2021) Shiki Suen</div>
</xf:if>

 

[ShikiSuen]

I tried {{year($xf.time)}} but it doesn't work. Using {{date($xf.time)}} can generate contents but I only want the year.

 

[ShikiSuen]

{{date($xf.time, 'Y')}} works.