Year	Percent
1950	8.77499
1955	9.02132
1960	11.72597
1965	10.18218
1970	9.22273
1975	8.60482
1980	7.73713
1985	6.51505
1990	6.86705
1995	6.79187
2000	6.41532
2005	6.53934
2010	5.76923
2015	5.52342
2020	5.75685
2025	5.61992
2030	5.65575
2035	5.60882
2040	5.49034
2045	5.39603
2050	5.38791
2055	5.42138
2060	5.42527
2065	5.38192
2070	5.31653
2075	5.24642
2080	5.20489
2085	5.18445
2090	5.166
2095	5.1349
2100	5.084