The Proton Wira originally launched in 1993 in Malaysia and was based on the 1992 Mitsubishi Lancer. More details on the Proton Wira here. Official sales figures show it sold 87,928 units in 2000, making it the best selling car in the country ahead of the Perodua Kancil (a rebadged Daihatsu Mira) with 74,929 units. The Wira is likely to have kept its title until 2003 included.
Please get in touch if you have more details on Malaysian car sales during these years or before.