Lindsay Kelly bought 100 shares of Google, 300 shares of Microsoft, and 500 shares of Nokia in January 2005. The adjusted close prices of these stocks over the next three years are shown in the accompanying table. 
Which of the following is the unweighted aggregate price index for Lindsay's portfolio for 2007, using 2005 as the base year?
Definitions:
Emotion-Focused/Experiential
A therapeutic approach that emphasizes understanding and addressing emotional experiences to facilitate healing and growth.
Experiential Therapies
Therapeutic approaches that emphasize experiencing feelings and emotions in the present, often through activities like role-playing, music, art, or outdoor experiences.
Cognitive Therapies
A group of psychotherapies that focus on identifying and changing negative thought patterns, beliefs, and attitudes.
Interpersonal Therapies
A form of psychotherapy focusing on improving communication skills and relationships.
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