Year	Percent
1950	5.16005
1955	5.06212
1960	4.91414
1965	2.36917
1970	1.87889
1975	2.34586
1980	1.6423
1985	1.72757
1990	1.72011
1995	1.66411
2000	1.58076
2005	1.63933
2010	1.49256
2015	1.88026
2020	3.19248
2025	5.69734
2030	8.41812
2035	11.84227
2040	14.21904
2045	15.50126
2050	17.11864
2055	19.00837
2060	21.56004
2065	24.06963
2070	26.61538
2075	28.66998
2080	29.62184
2085	30.19525
2090	30.7024
2095	31.21281
2100	31.77249