A 52-year-old female presents to your office regarding the role of hormonal therapy in her early stage breast cancer. She was recently diagnosed with an early stage right sided invasive ductal carcinoma, pT1bN0Mx. She is currently status post right sided lumpectomy and sentinel lymph node biopsy (0/3 lymph node involved) followed by adjuvant hypofractionated radiation therapy with a lumpectomy cavity boost. She now presents to discuss the role of endocrine therapy in her disease process. During your consultation, she is curious to know her approximate risk of distant recurrence from her breast cancer at 20 years. Which of the following would be most accurate?