Interesting Economics & Observation:.
Gold Vs Car
1990 .....1KG gold = Maruti 800
2000......1KG gold = Esteem
2005......1KG Gold = Innova
2010......1KG Gold = Fortuner
2020.....1KG Gold = BMW X1
Keep 1 KG gold & wait till 2030.you may be able to buy a private Jet.