Figure 2
The horizontal axis is labeled with years: “2015”, “2016”, “2017”, “2018”, “2019”, “2020”, “2021”, “2022”, “2023”, “2024”, and “Jun-25”. The vertical axis ranges from 0 to 20 in increments of 2 units. Each year contains a stacked bar divided into five categories. A legend at the bottom indicates the categories: “incentives”, “initiatives”, “law and regulations”, “standards”, and “guidance”. The graph shows eleven stacked bars. The data for the bars are as follows: 2015: incentives: 1; standards: 1 2016: incentives: 3; initiatives: 1; law and regulations: 1. 2017: incentives: 3; initiatives: 1; law and regulations: 1. 2018: no visible bar (no data). 2019: incentives: 1; initiatives: 4; law and regulations: 1. 2020: incentives: 3; initiatives: 2; law and regulations: 1. 2021: incentives: 7; initiatives: 4; law and regulations: 3. 2022: incentives: 3; initiatives: 4; guidance: 2. 2023: incentives: 5; initiatives: 4; law and regulations: 4. 2024: incentives: 5; initiatives: 9; law and regulations: 2; standards: 1; guidance: 1. Jun-25: incentives: 3; initiatives: 3; standards: 1. Note: All numerical data values are approximated.The distribution of prefabrication-related policies from 2015 to June 2025