Power of 3

Number Theory Level 1

$\begin{array} { r c r } 3^3 &=& {\color{#D61F06}{2}}7 \\ 3^4 &=& {\color{#D61F06}{8}}1 \\ 3^5 &=& 2{\color{#D61F06}{4}}3\\ 3^6 &=& 7{\color{#D61F06}{2}}9\\ 3^7 &=& 21{\color{#D61F06}{8}}7 \\ 3^8 &=& 65{\color{#D61F06}{6}}1 \end{array}$

The above shows the first few powers of 3, starting from $3^3$ . Is it true that the second last digit (from the right) of $3^n$ for integers $n\,(> 2)$ is always an even number?