At least two global institutions conduct research about this new consumer class in Indonesia. First, McKinsey, that, according to its research released in September 2012, predicts that Indonesia's consumer class with a minimum annual per capita income of US $3,600, or a daily consumption rate of about US $10 to US $100, will reach 135 million people by 2030.

Secondly, the Boston Consulting Group (BCG), which released a report in early March stating a similar bottom line as well as mentioning an increasing portion of the Indonesian population that can be categorized as middle-class and affluent consumer (MAC). MACs are individuals with a minimum monthly income of IDR 2 million (about US $217). BCG expects that by 2020 about 141 million Indonesians will fall in the MAC category; a number that is almost twice as much as the current 74 million Indonesian MACs).

The blossoming of this new consumer class in Indonesia is an important asset for the economy. John Maynard Keynes explains in his book "The General Theory of Employment, Interest and Money" that stable, middle-class consumption is required to spur investments that will drive economic growth.

When examined further, an important question arises related to the emergence of this new consumer class: is it able to maintain and strengthen the consolidation of democracy in the future? Or vice versa? This question is of high importance because the reciprocal relationship between economic growth and democracy is a complex one.

In their research, Przeworski and Fernando (1997) concluded that the level of prosperity of a population is very influential towards the state of democracy in a country. Their study indicates that, when a country's per capita income reaches US $1,000 to US $2,000 (based on purchasing power parity), the life expectancy of a democracy is 18 years. Furthermore, when a country's per capita income is in the range of US $2,001 to US $3,000 then the life expectancy of its democracy increases to 26 years. Lastly, when it touches the level of US $6,000, then democracy is believed to be "eternal". Their research, which is often cited by others, was based on a sample of 135 countries during the period 1950-1990.

According to the World Bank, Indonesia's current per capita income level stands at US $4,636 (based on purchasing power parity in 2011). When we apply this figure to Przeworski and Fernando's categorization above, it means that democracy in Indonesia should last for at least the next two decades.

In addition, a classical study regarding the relationship between democracy and economic development (Lipset, 1959), emphasizes the symbiosis between prosperity that is the result of development and democracy. That relationship implies that a population of which the majority is rich is more likely to participate in the country's political domain. The reason being that a rich population desires to maintain its political system.

However, the relationship between economic growth and a growing democracy is not always linear. There are also views that argue the relationship between the two does not occur directly, but instead through an intermediary, such as access to education and evenly distributed revenue due to the democratization drive.

Although Indonesia's growing consumer class has a positive impact on Indonesia's expanding economy, there are of course a number of bottlenecks that need to be dealt with. In my next column I will discuss a number of these bottlenecks, which include corruption, income distribution inequality, and weak state institutions.