Our strategic plan for 2019-2021 aims to deliver continued good organic growth and further incremental improvements to our adjusted operating profit margin and return on invested capital (ROIC). We intend to maintain product development at between 8%-10% of total revenues. We expect to fund the modernization of back-office systems by deriving additional cost savings.
The strategy is based on organic growth, although we may make further bolt-on acquisitions or non-core disposals to enhance our value and market positions. Acquisitions must fit our strategic direction, strengthen or extend our existing business, be accretive to diluted adjusted EPS in their first full year and, when integrated, deliver a ROIC above our weighted average cost of capital (8%) within three to five years. Our priorities for the next three years are: