period,wholesale_price
2010,1000.000000
2011,1200.000000
2012,2300.000000
2013,1500.000000
2014,1000.000000
2015,850.000000
2016,1100.000000
2017,1800.000000
2018,2000.000000
2019,2600.000000
2020,2600.000000
2021,3100.000000
2022,3000.000000
2023,2900.000000
2024,2350.000000
2025,1485.000000