Most of the umbrellas are of a commonly available plastic variety, with only about 1 percent of them being reclaimed by their owners. The police department handled a record 4,152,000 cases of lost property in 2019. Although they fell to around 2.8 million between 2020 and 2021 following the outbreak of the pandemic, cases rebounded to reach their third-highest figure ever last year. The most commonly lost property in recent years includes identification documents such as driver's licenses, as well as items like IC chip-equipped train passes. Electronic products are notably on the rise, with items such as wireless earphones, portable mini-fans and heated tobacco devices making their way to the center.