.year-2011 { background-color: #00aa00; }
.year-2017 { background-color: #509403; }
.year-2020 { background-color: #a07f06; }
.year-2021 { background-color: #d35d06; }
.year-2023 { background-color: #e92e03; }
.year-2025 { background-color: #ff0000; }