For the <select> dropdown element? Not in the standard cross-browser mode. Some browsers may (unverified) allow you to manipulate the scrollTop property of the scrollTop element while the list is visible, but I will not count on it. The only way to start in the middle is to choose the default average year.
Personally, I would not bother. Most users know what they can type when focusing the <select> anyway element - I rarely use the mouse to select an option from the <select> drop-down list.
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