Due to an influx of immigrants and guest workers from non-Muslim countries, such as India, the Philippines and Sri Lanka, the overall percentage of Muslims in the country has declined since the late 20th century.
Namun, karena masuknya imigran dan pekerja tamu dari negara-negara non-Muslim, seperti India, Filipina dan Sri Lanka, persentase keseluruhan Muslim di negara itu telah menurun sejak akhir abad ke-20.