\begin{tabular}{l|ccc} & Year \\ \cline{2-4} City & 2006 & 2007 & 2008 \\ \hline London & 45789 & 46551 & 51298 \\ Berlin & 34549 & 32543 & 29870 \\ Paris & 49835 & 51009 & 51970 \\ \end{tabular}
This is a practical practice from a tutorial. There is only one difference. Now I want "Year" to be centered among 2-4 columns. How to do that?