The bar chart illustrates changes in three population categories between 2006 and 2018.
Overall, the green category experienced the most significant growth over the period, eventually becoming the largest group in 2018, whereas the blue category fluctuated before rising again. In contrast, the red category showed relatively minor changes throughout the years.
In 2006, the blue group was the highest at about 42 units, followed by the red group at approximately 24, while the green group was the smallest at around 17. By 2010, the blue category dropped sharply to nearly 25, almost equal to the red category at 26, and the green group increased slightly to 22.
In 2014, the blue population recovered to roughly 35, and the green group rose significantly to about 33, overtaking the red group, which fell to 22. By 2018, the green category surged dramatically to around 52, becoming the largest, while the blue group increased to 45 and the red group grew modestly to 28 overall.