When setting up a retirement plan, many of us have been taught that as a rule, we should save at least 10 to 15 percent of our annual pre-tax salary. Yet, even as we see the cost of living increase, and adjusting our savings for any hurdles that may be thrown across our path – creating a rock-solid retirement portfolio helps you set up financial security for your golden years. Building a retirement portfolio has various components, and one should consider how annual growth in the overall market will help increase your retirement savings. Financial experts and brokers will also suggest that you…