Year	Percent
1950	9.37407
1955	10.15529
1960	9.83196
1965	8.21792
1970	6.55418
1975	6.821
1980	6.97449
1985	7.44581
1990	7.18651
1995	4.98124
2000	4.02768
2005	4.40999
2010	5.05491
2015	5.9052
2020	5.62749
2025	5.17549
2030	4.6677
2035	4.53339
2040	4.87189
2045	5.3178
2050	5.49621
2055	5.35266
2060	5.10703
2065	5.002
2070	5.12799
2075	5.36354
2080	5.50638
2085	5.46463
2090	5.29573
2095	5.14931
2100	5.12314