What's the uiautomator version that will support Android SDK Level 16?

The UiAutomator v2.+ version supports only SDK level 18+ and according to documentation uiautomator shipped first with SDK Level 16. I need a way to include that version in my gradle file rather than v2.1.1. androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.1'