Year	Percent
1950	7.19046
1955	6.49923
1960	5.57791
1965	4.63792
1970	3.92813
1975	3.34466
1980	2.98684
1985	2.82778
1990	3.03119
1995	3.18192
2000	3.46499
2005	3.75783
2010	4.14769
2015	4.26579
2020	4.49869
2025	5.07737
2030	5.79598
2035	6.56939
2040	7.48857
2045	8.48887
2050	9.78467
2055	11.48615
2060	13.075
2065	14.39219
2070	15.80713
2075	17.38796
2080	19.06462
2085	20.72371
2090	22.30579
2095	23.81755
2100	25.27512