These numbers seem counterintuitive for most of us in the financial advice industry. Do we not expect our contribution to the investor’s welfare to be proportionately larger than what these numbers show? Is the median annual income from financial capital really this small? Will this pattern — representing the prior generation — hold true of the baby boomers?
Case Schiller only tracks price appreciation of RE. RE as rental investment vehicle is measured primarily on rental yield or cap rate or some other measure. Price appreciation in that scenario is only a secondary means of growth, and arguably should be ignored as a predictor of returns when deciding on whether or not to invest in rentals. More important key performance indicators for rentals are net operating income and cash ROI. Appreciation, if it occurs, is a bonus.
Wouldn't it be nice to earn income without worrying about it? I'm not talking about doing your regular 9-to-5 job, but through passive income. Because, believe it or not, there are several easy ways to earn passive income. Yes, some of the ways may involve some work, time, and money up front, but once that's taken care of, you can sit back and watch your bank balance grow.
Writing an e-book is very popular among bloggers, as many have noted that “it's just a bunch of blog posts put together!” You will not only have to make an investment of time and energy to create the e-book, but market it correctly. However, if marketed correctly (through blogging affiliates in your niche, for example), you could have residual sales that last a very long time.

2007 Human Development Report (HDR), United Nations Development Program, November 27, 2007, p.25. (The report also notes that although India is rising economically, the bad news is that this has not been translated into accelerated progress in cutting under-nutrition. One-half of all rural children [in India] are underweight for their age—roughly the same proportion as in 1992.)
British territorial expansion in India throughout the 19th century created an institutional environment that, on paper, guaranteed property rights among the colonisers, encouraged free trade, and created a single currency with fixed exchange rates, standardised weights and measures and capital markets within the company-held territories. It also established a system of railways and telegraphs, a civil service that aimed to be free from political interference, a common-law and an adversarial legal system.[108] This coincided with major changes in the world economy – industrialisation, and significant growth in production and trade. However, at the end of colonial rule, India inherited an economy that was one of the poorest in the developing world,[109] with industrial development stalled, agriculture unable to feed a rapidly growing population, a largely illiterate and unskilled labour force, and extremely inadequate infrastructure.[110]
India has one of the fastest growing service sectors in the world with an annual growth rate above 9% since 2001, which contributed to 57% of GDP in 2012–13.[42] India has become a major exporter of IT services, Business Process Outsourcing (BPO) services, and software services with $154 billion revenue in FY 2017.[43][42] This is the fastest-growing part of the economy.[44] The IT industry continues to be the largest private-sector employer in India.[45][46] India is the third-largest start-up hub in the world with over 3,100 technology start-ups in 2014–15.[47] The agricultural sector is the largest employer in India's economy but contributes to a declining share of its GDP (17% in 2013–14). India ranks second worldwide in farm output.[48] The industry (manufacturing) sector has held a steady share of its economic contribution (26% of GDP in 2013–14).[49] The Indian automobile industry is one of the largest in the world with an annual production of 21.48 million vehicles (mostly two and three-wheelers) in 2013–14.[50] India had $600 billion worth of retail market in 2015 and one of world's fastest growing e-commerce markets.[51][52]

These days, low-risk bond yields aren’t enough to meet most income needs. When investing in bonds, the income typically comes as coupon payments – contractually guaranteed interest payments at predictable intervals.  There are many kinds of bond income available, so you must strike a balance between reaching for higher income (yield) and limiting risk.